US2956491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic diaphragm control device
Assignee: BULOVA RES AND DEV LAB Inc
•
Filing: 1956-01-03
•
Granted: 1960-10-18
•
Expires: 1976-01-03
Abstract
No abstract record available.
Inventors
- 👤 Fischer Franz
- 👤 Mueller-Herget Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:07
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/08; G03B7/081; G03B7/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US599556A
Cited
US2013362A
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US2193325A
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US2251473A
Cited
US2388609A
Cited
US2421476A
Cited
US2393407A
Cited
US2662457A
Cited
US2683402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |