US2486727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic light control device
Assignee: Individual
•
Filing: 1948-03-23
•
Granted: 1949-11-01
•
Expires: 1968-03-23
Abstract
No abstract record available.
Inventors
- 👤 Benjamin C Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:40
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/05; G03B7/00; G03B7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1022058A
Cited
US877576A
Cited
US1088695A
Cited
US1120710A
Cited
US2048013A
Cited
US1985097A
Cited
US2039193A
Cited
US2258140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-31 | 1953-05-02 | 1953-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-31 | 1957-05-02 | 1957-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-31 | 1961-05-02 | 1961-11-01 | $7700.00 | Window Closed / Lapsed |