US3293359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording and reproducing devices
Assignee: Panasonic Holdings Corp
•
Filing: 1963-11-29
•
Granted: 1966-12-20
•
Expires: 1983-11-29
Abstract
No abstract record available.
Inventors
- 👤 Yasuoka Shine
- 👤 Aratani Shozo
- 👤 Arimura Ichiro
- 👤 Yano Osahiko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:13
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A DEVICE FOR RECORDING AND REPRODUCING A BROADBAND SIGNAL COMPRISING A MAGNETIC TAPE, A ROTARY HEAD INCLUDING A MAGNETIC TRANSDUCER, SAID TRANSDUCER BEING ADAPTED TO SUCCESSIVELY SWEEP DIAGONALLY ACROSS SAID TAPE, A SOURCE FOR A REFERENCE SIGNAL HAVING A SYNCHRONOUS CHARACTERISTIC, MEANS FOR DERIVING A CONTROL SIGNAL RESPONSIVE TO SAID REFERENCE SIGNAL SOURCE, AN ELECTRIC MOTOR FOR ROTATION IN SYNCHRONISM WITH SAID CONTROL SIGNAL, SAID MOTOR BEING A BRUSHLESS D.C. SYNCHRONOUS MOTOR, AND A
Claim 2
Independent Claim
74 words
A DEVICE FOR RECORDING AND REPRODUCING A BROADBAND SIGNAL COMPRISING A MAGNETIC TAPE, A ROTARY HEAD INCLUDING A MAGNETIC TRANSDUCER, SAID TRANSDUCER BEING ADAPTED TO SUCCESSIVELY SWEEP DIAGONALLY ACROSS SAID TAPE, A SOURCE FOR A REFERENCE SIGNAL HAVING A SYNCHRONOUS CHARACTERISTIC, MEANS FOR DERIVING A CONTROL SIGNAL RESPONSIVE TO SAID REFERENCE SIGNAL SOURCE, AN ELECTRIC MOTOR FOR ROTATION IN SYNCHRONISM WITH SAID CONTROL SIGNAL, SAID MOTOR BEING A BRUSHLESS D.C. SYNCHRONOUS MOTOR, AND A
References Cited (Backward Citations)
US3179870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |