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US Patent: 2,528,011
Lifting jack
Patentee: Millard B. Lucker (exact or similar names) - St. Joseph, MI USPTO Classifications: 254/111 Tool Categories: material handling : jacks : vehicle jacks : automobile and truck jacks Assignees: Auto Specialties Mfg. Co. - St. Joseph, MI Manufacturer: Auto Specialties Mfg. Co. - St. Joseph, MI Witnesses: Unknown	Patent Dates: Applied: Nov. 29, 1944 Granted: Oct. 31, 1950 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: Pawl-and-ratchet jack with a "shiftable cam" with spring whose position determines whether operating the handle lowers or raises.

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