Patent US2468993A successfully refreshed from Google Patents.
US2468993A
Expired / Lapsed
US
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Motion-picture projector
Assignee: De Jur AMSCO Corp
•
Filing: 1946-10-17
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Granted: 1949-05-03
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Expires: 1966-10-17
Abstract
No abstract record available.
Inventors
- 👤 Lewis H Mcomaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:19
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1926862A
Cited
US940275A
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US1227887A
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US1846004A
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US1982739A
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US1889149A
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US2190658A
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US2282863A
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US2259591A
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US2281726A
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US2335436A
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US2335435A
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US2302811A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-02 | 1952-11-01 | 1953-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-02 | 1956-11-01 | 1957-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-02 | 1960-11-01 | 1961-05-03 | $7700.00 | Window Closed / Lapsed |