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