| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | Viscosity coupled switch | US24319738 | 1938-11-30 | US2236411A | 1941-03-25 | METCALF HERBERT E |
| 62 | Switch mechanism | US13523237 | 1937-04-06 | US2141278A | 1938-12-27 | OWENS JOSEPH W |
| 63 | Butt contact rotary switch | US16263637 | 1937-09-07 | US2116842A | 1938-05-10 | METCAIF HERBERT E |
| 64 | Circuit controlling device | US10162136 | 1936-09-19 | US2109987A | 1938-03-01 | BOWER GEORGE W |
| 65 | Signal switch | US6698136 | 1936-03-03 | US2089183A | 1937-08-10 | CAMERON GEORGE A |
| 66 | Reverse signal light switch | US8108036 | 1936-05-21 | US2086800A | 1937-07-13 | JESS HARRIS |
| 67 | Compensating switch | US10922526 | 1926-05-15 | US1784883A | 1930-12-16 | HAROLD ROWNTREE |
| 68 | Switch | US1584925 | 1925-03-16 | US1751204A | 1930-03-18 | KEMPTON HERBERT E; GALLIMORE KEITH F |
| 69 | Controller for electric motors. | US1900032415 | 1900-10-08 | US667619A | 1901-02-05 | EATON THOMAS W |
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