Patent US2685223A successfully refreshed from Google Patents.
US2685223A
Expired / Lapsed
US
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Method for preparing cutout masks for use in taking composite motion pictures
Assignee: VISTASCOPE Inc
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Filing: 1950-11-06
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Granted: 1954-08-03
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Expires: 1970-11-06
Abstract
No abstract record available.
Inventors
- 👤 Dufour Achille Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:30
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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US1540213A
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US1669407A
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US1673019A
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US1727288A
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US1679942A
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US1955993A
Cited
US2024081A
Cited
US2120586A
Cited
GB593045A
Cited
US2488177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |