US2519725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic reproducer and recorder utilizing endless record and automatic selecting system
Assignee: Individual
•
Filing: 1946-03-15
•
Granted: 1950-08-22
•
Expires: 1966-03-15
Abstract
No abstract record available.
Inventors
- 👤 De Loy J White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:52
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/675; G11B15/68; G11B15/6895
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2177481A
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US2209157A
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US2258651A
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US2356145A
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US2349018A
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US2335277A
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US2327956A
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US2269952A
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US2317310A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |