John Killefer (May 24, 1833 – July 1926) was a businessman and inventor. He apprenticed for two years as a blacksmith beginning in 1850, then moved to southern California and bought an orange grove. He soon noticed the phenomenon referred to as hardpan (the creation of a water resistant soil layer).[1] Sometime in 1892 he designed and created the chisel plough for land tilling to prevent or defeat hardpanning.[2][3] He founded Killefer Manufacturing Company in 1893 in San Bernardino, California.[4] He relocated his company to Palmetto Street, Los Angeles, California in 1895 to lower overhead costs for the production of his plow.[citation needed] His son took over the company before it was sold to Deere & Company in 1937.[5]
^Pacific Rural Press. Dewey & Company. July 15, 1922. p. 59. Retrieved March 6, 2021.
^"Deep Cultivation and Plowing". California Cultivator. 19: 289. November 7, 1902. Retrieved March 6, 2021.
^The Associated Grower. Cornell University. 1922. p. 4. Retrieved March 6, 2021.
^Hardware: A Review of the American Hardware Market (24 ed.). 1901. p. 38.
^Moody's Industrial Manual. Moody's Investors Service. 1950. p. 858. Retrieved March 6, 2021.
JohnKillefer (May 24, 1833 – July 1926) was a businessman and inventor. He apprenticed for two years as a blacksmith beginning in 1850, then moved to...
Killefer is a surname. Notable people with the surname include: Bill Killefer (1887–1960), American baseball player, coach and manager JohnKillefer (1833–1926)...
John D. Carmack II (born August 21, 1970) is an American computer programmer and video game developer. He co-founded the video game company id Software...
debut on April 15. He was joined on the Phillies that year by catcher Bill Killefer, who went on to become Alexander's favorite battery mate, catching 250...
March 17 – Charles Edwin Wilbour, Egyptologist (died 1896) May 24 – JohnKillefer, businessman and inventor (died 1926) May 27 – Hester Martha Poole,...
John Curtis Samples (born c. 1950s) is an American political theorist, author, and vice president of the Cato Institute. As of 2021[update], he serves...
from the original on October 19, 2017. Retrieved October 9, 2017. Leyden, John (October 27, 2015). "WhatsApp laid bare: Info-sucking app's innards probed"...
Current Mark Zuckerberg Marc Andreessen John D. Arnold Drew Houston Nancy Killefer Robert M. Kimmitt Hock Tan Tony Xu Former Sheryl Sandberg Peter Thiel...
Diplomatic Courier (1952) – Sam F. Carew The Winning Team (1952) – Bill Killefer Springfield Rifle (1952) – Matthew Quint Torpedo Alley (1952) – Cmdr. Heywood...
Current Mark Zuckerberg Marc Andreessen John D. Arnold Drew Houston Nancy Killefer Robert M. Kimmitt Hock Tan Tony Xu Former Sheryl Sandberg Peter Thiel...
Current Mark Zuckerberg Marc Andreessen John D. Arnold Drew Houston Nancy Killefer Robert M. Kimmitt Hock Tan Tony Xu Former Sheryl Sandberg Peter Thiel...
Current Mark Zuckerberg Marc Andreessen John D. Arnold Drew Houston Nancy Killefer Robert M. Kimmitt Hock Tan Tony Xu Former Sheryl Sandberg Peter Thiel...
Current Mark Zuckerberg Marc Andreessen John D. Arnold Drew Houston Nancy Killefer Robert M. Kimmitt Hock Tan Tony Xu Former Sheryl Sandberg Peter Thiel...
Current Mark Zuckerberg Marc Andreessen John D. Arnold Drew Houston Nancy Killefer Robert M. Kimmitt Hock Tan Tony Xu Former Sheryl Sandberg Peter Thiel...
Current Mark Zuckerberg Marc Andreessen John D. Arnold Drew Houston Nancy Killefer Robert M. Kimmitt Hock Tan Tony Xu Former Sheryl Sandberg Peter Thiel...
each other". Business Insider Australia. Retrieved May 2, 2018. Falcone, John (May 1, 2018). "F8 2018, day 1: Everything Facebook just announced". CNET...
Current Mark Zuckerberg Marc Andreessen John D. Arnold Drew Houston Nancy Killefer Robert M. Kimmitt Hock Tan Tony Xu Former Sheryl Sandberg Peter Thiel...
Retrieved 2024-04-23. Marlett, David (September 2015). "The Virtual Reality of John Carmack". D Magazine. D Magazine Partners, Inc. Retrieved 28 February 2020...
10, 2020, Facebook appointed two new directors Tracey Travis and Nancy Killefer to their board of members. In June 2020, several major companies including...
Current Mark Zuckerberg Marc Andreessen John D. Arnold Drew Houston Nancy Killefer Robert M. Kimmitt Hock Tan Tony Xu Former Sheryl Sandberg Peter Thiel...
Current Mark Zuckerberg Marc Andreessen John D. Arnold Drew Houston Nancy Killefer Robert M. Kimmitt Hock Tan Tony Xu Former Sheryl Sandberg Peter Thiel...
Current Mark Zuckerberg Marc Andreessen John D. Arnold Drew Houston Nancy Killefer Robert M. Kimmitt Hock Tan Tony Xu Former Sheryl Sandberg Peter Thiel...
Chan". The Primary School. March 8, 2022. Retrieved April 16, 2024. Kell, John (February 8, 2016). "Mark Zuckerberg Reveals Daughter's Chinese Name". Fortune...
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