US3022960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanically damped tension system for tape recorder
Assignee: Avco Corp
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Filing: 1961-02-08
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Granted: 1962-02-27
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Expires: 1981-02-08
Abstract
No abstract record available.
Inventors
- 👤 Walter E Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:21
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/43; G11B15/02; G11B15/16; G11B15/26; G11B15/28; G11B15/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |