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| All Patents in class 74/525 | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 284,703 | Sep. 11, 1883 | G.H. Zschech | Belt-tightener | |
![]() | 2,912,879 | Nov. 17, 1959 | R.F. Bannow | Variable Leverage Joy Stick for Feeding Work | |