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| All Patents in class 74/89.21 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 5,086X | Apr. 28, 1828 | P. Cooper | Converting alternate rectilinear to rotary motion | ||
| 1,646,979 | Oct. 25, 1927 | J.H. Parsons | Automobile window mechanism | ||
| 5,690,567 | Nov. 25, 1997 | M. Lindner, J.F. DeNijs | Transmission for Converting Rotary Motion into Linear Motion | ||