US2983810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoflash unit
Assignee: Individual
•
Filing: 1958-05-12
•
Granted: 1961-05-09
•
Expires: 1978-05-12
Abstract
No abstract record available.
Inventors
- 👤 Robert S James
- 👤 Joseph J Seman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:45
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2304085A
Cited
US2295339A
Cited
US2546734A
Cited
US2508242A
Cited
US2624831A
Cited
US2786936A
Cited
US2757317A
Cited
US2840690A
Cited
US2763812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |