Jeffrey Manufacturing Co
Jeffrey MaActive Patents
0
Total Holdings
17
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2848102A | Mold conveyer | Expired / Lapsed | 1955-05-06 | 1958-08-19 | 0 | Details |
| US2588866A | Hydraulic transmission of the swash plate type pump and mot… | Expired / Lapsed | 1944-09-14 | 1952-03-11 | 0 | Details |
| US2554038A | Chain having rollers forming its conveying surface | Expired / Lapsed | 1948-05-12 | 1951-05-22 | 0 | Details |
| US2498405A | Continuous vibrating reaction chamber | Expired / Lapsed | 1946-03-11 | 1950-02-21 | 2 | Details |
| US2452248A | Electrical mine apparatus | Expired / Lapsed | 1944-05-12 | 1948-10-26 | 0 | Details |
| US2450216A | Electric control circuit | Expired / Lapsed | 1946-05-21 | 1948-09-28 | 0 | Details |
| US2431174A | Mold dumping apparatus | Expired / Lapsed | 1946-03-20 | 1947-11-18 | 0 | Details |
| US2387159A | Mining machine | Expired / Lapsed | 1943-11-04 | 1945-10-16 | 0 | Details |
| US2349390A | System for treating sewage | Expired / Lapsed | 1942-05-16 | 1944-05-23 | 0 | Details |
| US2285434A | Apparatus for operating vibratory conveyers or motors | Expired / Lapsed | 1938-10-22 | 1942-06-09 | 0 | Details |
| US2250722A | Liquid depth sampling device and method of obtaining samples | Expired / Lapsed | 1939-01-12 | 1941-07-29 | 0 | Details |
| US2168663A | Plug type switch | Expired / Lapsed | 1936-04-03 | 1939-08-08 | 0 | Details |
| US2161500A | Process and apparatus for treatment of mineral materials | Expired / Lapsed | 1935-01-02 | 1939-06-06 | 0 | Details |
| US2102691A | Automatic system for supplying pulverized fuel to furnaces | Expired / Lapsed | 1933-01-18 | 1937-12-21 | 0 | Details |
| US2020034A | Sand conditioning apparatus | Expired / Lapsed | 1931-12-31 | 1935-11-05 | 0 | Details |
| US1412868A | Mining machine | Expired / Lapsed | 1916-06-05 | 1922-04-18 | 0 | Details |
| US908031A | Trolley-switch. | Expired / Lapsed | 1901-01-12 | 1908-12-29 | 0 | Details |