Patent US1912750A successfully refreshed from Google Patents.
US3505486A
Expired / Lapsed
US
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Magnetic tape cartridge player with radio having a common amplifier and switchless independent operation therethrough
Assignee: Gates LearJet Corp
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Filing: 1966-10-13
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Granted: 1970-04-07
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Expires: 1986-10-13
Abstract
No abstract record available.
Inventors
- 👤 William P Lear
- 👤 Samuel H Auld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:27
CPC Classifications
G; G11; G11B; G11B31/00
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) | 1973-04-06 | 1973-10-06 | 1974-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-06 | 1977-10-06 | 1978-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-06 | 1981-10-06 | 1982-04-07 | $7700.00 | Window Closed / Lapsed |