Patent US2611293A successfully refreshed from Google Patents.
US2611293A
Expired / Lapsed
US
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Motion-picture projector attachment
Assignee: Individual
•
Filing: 1949-08-02
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Granted: 1952-09-23
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Expires: 1969-08-02
Abstract
No abstract record available.
Inventors
- 👤 Henry G Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:08
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1550320A
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US1636647A
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US1944032A
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US2057153A
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US2036428A
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FR847038A
Cited
US2285915A
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US2477896A
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US2438333A
Cited
US2452745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |