US2483023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flashlight and shutter synchronizer having adjustable switch actuating member
Assignee: WOLLENSAK OPTICAL CO
•
Filing: 1946-05-16
•
Granted: 1949-09-27
•
Expires: 1966-05-16
Abstract
No abstract record available.
Inventors
- 👤 Pirwitz Friedrich A Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:54
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2016834A
Cited
US1954673A
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US2171743A
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US2284486A
Cited
US2218494A
Cited
US2365847A
Cited
US2406691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-26 | 1953-03-28 | 1953-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-26 | 1957-03-28 | 1957-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-26 | 1961-03-28 | 1961-09-27 | $7700.00 | Window Closed / Lapsed |