US2887939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic exposure controlling apparatus
Assignee: Individual
•
Filing: 1954-11-03
•
Granted: 1959-05-26
•
Expires: 1974-11-03
Abstract
No abstract record available.
Inventors
- 👤 Gebele Kurt
- 👤 Fahlenberg Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:32
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1174014A
Cited
US1213731A
Cited
AT139562B
Cited
DE655518C
Cited
DE666365C
Cited
US2342819A
Cited
FR1028877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |