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| All Patents in class 188/134 | |||||
| Picture | Number | Date | Patentee | Title | |
| 714,916 | Dec. 02, 1902 | J.W. Kellogg | Automatic Clutch | ||
![]() | 1,533,281 | Apr. 14, 1925 | H.E. Tautz | Testing machine | |
| 2,888,843 | Jun. 02, 1959 | J.C. Hollis | Machine Tool Turret With Bidirectional Coupling | ||