Richardson Co
RichardsonActive Patents
0
Total Holdings
9
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3091301A | Automatic feed rate compensation for automatic weighing sys… | Expired / Lapsed | 1961-11-24 | 1963-05-28 | 2 | Details |
| US2707201A | Porous storage battery separator and method of making | Expired / Lapsed | 1951-05-05 | 1955-04-26 | 1 | Details |
| US2212402A | Device for treating storage battery cell covers | Expired / Lapsed | 1937-12-31 | 1940-08-20 | 0 | Details |
| US1962660A | Carton and method of sealing it | Expired / Lapsed | 1929-03-23 | 1934-06-12 | 0 | Details |
| US1949249A | Fibrous composition and process of manufacture | Expired / Lapsed | 1928-10-23 | 1934-02-27 | 0 | Details |
| US1919070A | Hydraulic press | Expired / Lapsed | 1930-03-01 | 1933-07-18 | 0 | Details |
| US1631628A | Coloring granulated mineral, particularly slate | Expired / Lapsed | 1925-07-21 | 1927-06-07 | 0 | Details |
| US1572425A | Process for coloring mineral matter | Expired / Lapsed | 1925-07-27 | 1926-02-09 | 0 | Details |
| US1571667A | Building board and method of making it | Expired / Lapsed | 1920-04-17 | 1926-02-02 | 0 | Details |