Metropolitan Engineering Co
MetropolitActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2105132A | Torque arm and similar structural member | Expired / Lapsed | 1936-05-13 | 1938-01-11 | 0 | Details |
| US1979712A | Welding | Expired / Lapsed | 1932-01-07 | 1934-11-06 | 0 | Details |
| US1880269A | Hollow fitting | Expired / Lapsed | 1928-07-06 | 1932-10-04 | 0 | Details |
| US1811500A | Welding segments | Expired / Lapsed | 1929-01-23 | 1931-06-23 | 0 | Details |
| US1799632A | Superheater | Expired / Lapsed | 1924-05-29 | 1931-04-07 | 0 | Details |
| US1776855A | Making flanged tubes and the like | Expired / Lapsed | 1929-01-23 | 1930-09-30 | 0 | Details |