US3483318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System and method for direct magnetic recording and reproducing of television signals employing inversion of sync pulses
Assignee: Akai Electric Co Ltd
•
Filing: 1966-08-15
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Granted: 1969-12-09
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Expires: 1986-08-15
Abstract
No abstract record available.
Inventors
- 👤 Katsuyuki Iwai
- 👤 Motonori Fukatsu
- 👤 Fujio Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:15
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/921
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734941A
Cited
GB1041633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |