US2928326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Focal-plane shutters for photographic cameras
Assignee: Kamera und Kinowerke Dresden VEB
•
Filing: 1954-08-13
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Granted: 1960-03-15
•
Expires: 1974-08-13
Abstract
No abstract record available.
Inventors
- 👤 Loose Erhard
- 👤 Bachmann Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:07
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08; G03B9/28; G03B9/32; G03B9/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2122671A
Cited
US2365690A
Cited
US2548530A
Cited
DE852806C
Cited
US2758526A
Cited
US2877698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |