Patent US2930855A successfully refreshed from Google Patents.
US2930855A
Expired / Lapsed
US
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Control system for recording apparatus
Assignee: Individual
•
Filing: 1954-04-05
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Granted: 1960-03-29
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Expires: 1974-04-05
Abstract
No abstract record available.
Inventors
- 👤 James T Blakistone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:58
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/22; G11B15/02; G11B15/10; G11B31/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2563545A
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US909414A
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US2279753A
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US2356421A
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US2572596A
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US2504587A
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US2536666A
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US2683193A
Cited
US2713618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |