US3023942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for recording and reproducing signals
Assignee: US Philips Corp
•
Filing: 1958-05-08
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Granted: 1962-03-06
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Expires: 1978-05-08
Abstract
No abstract record available.
Inventors
- 👤 Bakos Gyorgy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:13
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/56; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/43; G11B15/02; G11B15/05; G11B15/06; G11B15/10; G11B15/18; G11B15/26; G11B15/28; G11B15/29; G11B15/44; G11B15/442; G11B15/46; G11B15/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732144A
Cited
US2687884A
Cited
US2792217A
Cited
US2833538A
Cited
US2943852A
Cited
US2893653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |