US2927504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus for stereo projectors
Assignee: ALBERT E BACHELET
•
Filing: 1956-09-20
•
Granted: 1960-03-08
•
Expires: 1976-09-20
Abstract
No abstract record available.
Inventors
- 👤 Todd A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:05
CPC Classifications
G; G03; G03B; G03B35/00; G03B35/18; G03B35/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1931128A
Cited
US2528489A
Cited
US2580874A
Cited
US2598573A
Cited
US2653511A
Cited
US2704008A
Cited
US2750444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |