Patent Explorer
Browse, filter, and analyze 5 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3884553A | Optical display system with improved spectral efficiency | Technical Operations Inc | Expired / Lapsed | 1974-01-16 | 1975-05-20 | 1994-01-16 | 0.0 yrs | 22 | |
| US3770340A | Coherent optical system with expanded bandwidth and noise suppression | Technical Operations Inc | Expired / Lapsed | 1972-08-21 | 1973-11-06 | 1992-08-21 | 0.0 yrs | 19 | |
| US3719127A | Spectral zonal information storage and retrieval | Technical Operations Inc | Expired / Lapsed | 1971-04-01 | 1973-03-06 | 1991-04-01 | 0.0 yrs | 6 | |
| US3597069A | Tv film reproduction system compatible with diffraction process color projection systems | Technical Operations Inc | Expired / Lapsed | 1969-02-05 | 1971-08-03 | 1989-02-05 | 0.0 yrs | 9 | |
| US3061769A | Electric wave converter | Technical Operations Inc | Expired / Lapsed | 1960-04-14 | 1962-10-30 | 1980-04-14 | 0.0 yrs | 0 |