Patent US2452745A successfully refreshed from Google Patents.
US2452745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Still picture attachment for moving picture projectors
Assignee: Individual
•
Filing: 1946-04-03
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Granted: 1948-11-02
•
Expires: 1966-04-03
Abstract
No abstract record available.
Inventors
- 👤 Getter Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:25
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1174208A
Cited
US1434219A
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US1550320A
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US1636647A
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US1931228A
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US2153149A
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US2243160A
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US2305664A
Cited
US2315914A
Cited
US2276735A
Cited
US2438333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-02 | 1952-05-03 | 1952-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-02 | 1956-05-03 | 1956-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-02 | 1960-05-03 | 1960-11-02 | $7700.00 | Window Closed / Lapsed |