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US2630737A
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Apparatus for making film exposures for three-dimensional moving pictures
Assignee: WORCESTER FILM Corp
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Filing: 1949-06-25
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Granted: 1953-03-10
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Expires: 1969-06-25
Abstract
No abstract record available.
Inventors
- 👤 Floyd A Ramsdell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:18
CPC Classifications
G; G03; G03B; G03B35/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE598288C
Cited
GB191500873A
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GB178344A
Cited
US1595984A
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US1596835A
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DE459039C
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US2153892A
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US2463311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |