Wallace & Tiernan Co Inc
Wallace &Active Patents
0
Total Holdings
10
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2541742A | Dry feeder | Expired / Lapsed | 1946-07-20 | 1951-02-13 | 0 | Details |
| US2423172A | Backwashing means for filtering apparatus by reverse flow o… | Expired / Lapsed | 1944-04-19 | 1947-07-01 | 0 | Details |
| US2381802A | Dry chemical feeder | Expired / Lapsed | 1941-10-23 | 1945-08-07 | 0 | Details |
| US2289589A | Treatment of aqueous liquids with halogens | Expired / Lapsed | 1939-04-10 | 1942-07-14 | 0 | Details |
| US2289332A | Liquid feeding apparatus | Expired / Lapsed | 1938-02-09 | 1942-07-14 | 0 | Details |
| US2229038A | Liquid feeding apparatus | Expired / Lapsed | 1937-05-05 | 1941-01-21 | 0 | Details |
| US2218773A | Apparatus for supplying gas | Expired / Lapsed | 1936-08-20 | 1940-10-22 | 0 | Details |
| US1960615A | Measuring and controlling apparatus | Expired / Lapsed | 1929-06-25 | 1934-05-29 | 0 | Details |
| US1888959A | Sterilizing apparatus | Expired / Lapsed | 1929-11-09 | 1932-11-22 | 0 | Details |
| US1777986A | Gas-supply apparatus | Expired / Lapsed | 1927-11-30 | 1930-10-07 | 0 | Details |