US2980002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism of iris stop for camera
Assignee: Individual
•
Filing: 1957-06-10
•
Granted: 1961-04-18
•
Expires: 1977-06-10
Abstract
No abstract record available.
Inventors
- 👤 Anzai Shoji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:49
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/02; G03B9/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB409777A
Cited
US2262509A
Cited
US2435752A
Cited
US2504011A
Cited
FR1003952A
Cited
US2803182A
Cited
US2805610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |