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| All Patents in class 475/154 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,585,216 | Feb. 12, 1952 | T. Foster, S.A. Brandenburg, C.A. Bickel | Unitary Mechanism for Performing Multiple Simultaneous and Successive Operations | ||
| 2,709,928 | Jun. 07, 1955 | G.H. Jones | Variable Speed Transmission | ||