US2749792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light dividing system
Assignee: Technicolor Motion Picture Corp
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Filing: 1952-02-01
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Granted: 1956-06-12
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Expires: 1972-02-01
Abstract
No abstract record available.
Inventors
- 👤 Donald H Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:50
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/28; G02B5/285; C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L33/00; C08L33/18; C08L33/20; G02B27/00; G02B27/10; G02B27/1006; G02B27/1013; G02B27/14; G02B27/141; G02B27/142; G02B27/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2000058A
Cited
DE716153C
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US2392978A
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US2418627A
Cited
GB586957A
Cited
US2560351A
Cited
US2642487A
Cited
US2589930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |