US3027425A
Expired / Lapsed
US
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Magnetic recording system
Assignee: Avco Manufacturing Corp
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Filing: 1957-10-24
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Granted: 1962-03-27
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Expires: 1977-10-24
Abstract
No abstract record available.
Inventors
- 👤 Tannenbaum Wesley
- 👤 Hudes Ellis
- 👤 Goldstein Alfred Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:10
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/66; H04B1/662; G; G11; G11B; G11B15/00; G11B15/02; G11B15/18; G11B15/46; G11B15/48; G11B20/00; G11B20/00007; G11B23/00; G11B23/02; G11B23/12; G11B23/50; G11B23/502; G11B27/00; G11B27/005; G11B27/10; G11B27/19; G11B27/28; H04K; H04K1/00; H04K1/06; H05; H05F; H05F3/00; H05F3/02
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) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |