US3499976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording apparatus and method for moving a transducer into engagement with a selected portion of a record
Assignee: REFAC INTERNATIONAL Ltd 100 E 42ND ST NY NY 10017 A CORP OF NY
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Filing: 1964-10-02
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Granted: 1970-03-10
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Expires: 1984-10-02
Abstract
No abstract record available.
Inventors
- 👤 Jerome H Lemelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:52
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/02; G11B27/022; G11B27/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2514578A
Cited
US2683568A
Cited
US2703714A
Cited
GB810111A
Cited
US2965720A
Cited
US2927975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |