US2968991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for recording, playback and erase of sound on magnetically prepared movie film
Assignee: Individual
•
Filing: 1955-11-23
•
Granted: 1961-01-24
•
Expires: 1975-11-23
Abstract
No abstract record available.
Inventors
- 👤 Gerald H Wagman
- 👤 Arnold B Baskin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:10
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1336775A
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US1877731A
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US1912153A
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US2064049A
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US2064050A
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US2379489A
Cited
US2532761A
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US2694107A
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US2773416A
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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) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |