US2907819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the magnetic recording and/or reproduction of television signals
Assignee: US Philips Corp
•
Filing: 1955-06-20
•
Granted: 1959-10-06
•
Expires: 1975-06-20
Abstract
No abstract record available.
Inventors
- 👤 Perilhou Jean Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:50
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/917; H04N5/919; H04N5/92; H04N7/00; H04N7/12; H04N7/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1771360A
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US1974911A
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FR717974A
Cited
US2219149A
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US2281405A
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US2275224A
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US2293899A
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US2335864A
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US2517808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |