US2760048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shadowless photographic light
Assignee: Individual
•
Filing: 1953-03-11
•
Granted: 1956-08-21
•
Expires: 1973-03-11
Abstract
No abstract record available.
Inventors
- 👤 Clifford L Schulte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:52
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/0442
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1601111A
Cited
US1736012A
Cited
US2290793A
Cited
US2501405A
Cited
US2550698A
Cited
US2614783A
Cited
US2682603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |