Patent US3535027A successfully refreshed from Google Patents.
US1174479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-projector for motion-picture machines.
Assignee: EDWARD C WALLACE
•
Filing: 1915-08-19
•
Granted: 1916-03-07
•
Expires: 1935-08-19
Abstract
No abstract record available.
Inventors
- 👤 John Darby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:25
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/20; G03B21/2046
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1919-03-07 | 1919-09-06 | 1920-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-03-07 | 1923-09-06 | 1924-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-03-07 | 1927-09-06 | 1928-03-07 | $7700.00 | Window Closed / Lapsed |