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| All Patents in class 254/369 | |||||
| Picture | Number | Date | Patentee | Title | |
| 2,633,328 | Mar. 31, 1953 | B.E. Wallace | Winch | ||
![]() | 2,913,224 | Nov. 17, 1959 | G. Uhlig | Winch | |
![]() | 3,198,487 | Aug. 03, 1965 | D.C. Cox | Rapid lowering winch-hoist | |