US2480604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Built-in flashlight and shutter synchronizer with adjustable delay means
Assignee: WOLLENSAK OPTICAL CO
•
Filing: 1946-11-07
•
Granted: 1949-08-30
•
Expires: 1966-11-07
Abstract
No abstract record available.
Inventors
- 👤 Pirwitz Friedrich A Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:01
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/70
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2094799A
Cited
US2238453A
Cited
US2298107A
Cited
US2326077A
Cited
US2331568A
Cited
US2384639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |