US Patent: 2,528,011
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Lifting jack
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Patentee:
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Millard B. Lucker (exact or similar names) - St. Joseph, MI |
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Patent Dates:
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Applied: |
Nov. 29, 1944 |
Granted: |
Oct. 31, 1950 |
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Jeff Joslin
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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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