Sir Howard Grubb Parsons and Co Ltd
Sir HowardActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB1118969A | Improvements in and relating to monochromators | Expired / Lapsed | 1965-10-27 | — | 0 | Details |
| GB805544A | Improvements in or relating to sonic gas analysers | Expired / Lapsed | 1956-01-06 | — | 0 | Details |
| US3489484A | Reflecting members for optical instruments | Expired / Lapsed | 1966-05-12 | 1970-01-13 | 0 | Details |
| US3469924A | Optical interferometers | Expired / Lapsed | 1966-01-04 | 1969-09-30 | 0 | Details |
| US3062089A | Grating monochromators | Expired / Lapsed | 1959-08-11 | 1962-11-06 | 0 | Details |
| US2874564A | Sonic gas analysers | Expired / Lapsed | 1955-11-15 | 1959-02-24 | 0 | Details |