| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | Sealed gear casing and driving means | US31794352 | 1952-10-31 | US2742790A | 1956-04-24 | NELSON ANTON R |
| 2 | Oil-chamber for electric clocks | US1593435 | 1935-04-12 | US2062103A | 1936-11-24 | PERRY RUPERT C |
| 3 | Time-train unit for clocks and the like | US47709043 | 1943-02-25 | US2383391A | 1945-08-21 | JOHNSON MANFRED J |
| 4 | Oil trap for motors | US13886637 | 1937-04-24 | US2219387A | 1940-10-29 | HANSEN WILLIAM L; HURST IRA N |
| 5 | Oil-chamber for electric clocks | US2319735 | 1935-05-24 | US2038299A | 1936-04-21 | WALTER KOHLHAGEN |
| 6 | Drive from sealed gear casing | US71722134 | 1934-03-24 | US2003163A | 1935-05-28 | WARREN HENRY E |
QQ群二维码
意见反馈
意见反馈