Patent US2585291A successfully refreshed from Google Patents.
US2585291A
Expired / Lapsed
US
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Device for forming sound records
Assignee: Eastman Kodak Co
•
Filing: 1946-07-02
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Granted: 1952-02-12
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Expires: 1966-07-02
Abstract
No abstract record available.
Inventors
- 👤 Wittel Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:00
CPC Classifications
G; G10; G10H; G10H3/00; G10H3/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1555281A
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US2014741A
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GB384979A
Cited
DE594015C
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US1967239A
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US1963079A
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US2270996A
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US2273863A
Cited
US2229293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |