US2941445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating fire shutter
Assignee: Kamera und Kinowerke Dresden VEB
•
Filing: 1955-07-07
•
Granted: 1960-06-21
•
Expires: 1975-07-07
Abstract
No abstract record available.
Inventors
- 👤 Kuhnert Alfred Rudolf
- 👤 Rothe Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:19
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1609961A
Cited
US1006406A
Cited
GB149256A
Cited
US1423139A
Cited
US1676542A
Cited
US1900919A
Cited
US1949455A
Cited
US1965366A
Cited
US2445288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |