Patent US2737076A successfully refreshed from Google Patents.
US2737076A
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Method of making optical prism
Assignee: Technicolor Motion Picture Corp
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Filing: 1952-06-12
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Granted: 1956-03-06
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Expires: 1972-06-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank C Rock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:34
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/04; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2361514A
Cited
GB191513042A
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US2139640A
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GB475415A
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US2487063A
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GB586957A
Cited
US2604418A
Cited
US2642487A
Cited
US2563936A
Cited
US2559969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |