US2831104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic illuminating means
Assignee: Individual
•
Filing: 1956-01-30
•
Granted: 1958-04-15
•
Expires: 1976-01-30
Abstract
No abstract record available.
Inventors
- 👤 Brandt Robert Jay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:44
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/06; F; F21; F21W; F21W2131/00; F21W2131/40; F21W2131/406
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB234530A
Cited
US2280402A
Cited
US2433982A
Cited
US2469412A
Cited
US2494058A
Cited
US2688271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |