US3160704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video tape recording
Assignee: Individual
•
Filing: 1959-06-17
•
Granted: 1964-12-08
•
Expires: 1979-06-17
Abstract
No abstract record available.
Inventors
- 👤 Hollingsworth R Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:01
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
116 words
IN A MAGNETIC RECORD-READOUT SYSTEM, MEANS COMPRISING A NON-MAGNETIC TAPE WITH STRAIGHT MAGNETIC MATERIAL LINES MOUNTED TRANSVERSELY THEREON, ELECTROMAGNETIC TRANSDUCER MEANS HAVING A RAZOR SHARP ELONGATED EDGE FORMING ONE POLE PIECE OF A RECORDING GAP AND PLACED BELOW SAID TAPE, THE OTHER POLE PIECE OF SAID ELECTROMAGNETIC TRANSDUCER MEANS HAVING A RAZOR SHARP ELONGATED EDGE AND PLACED ABOVE SAID TAPE, SAID POLE PIECE EDGES POSITIONED TO ANGULARLY TRAVERSE ONE OF SAID LINES BY LONGITUDINAL TAPE MOVEMENT BUT BEFORE LEAVING SAME SAID EDGES OF SAID GAP HAVE BEGUN TO TRAVERS THE NEXT ONE OF SAID LINES TO PROVIDE RECORDING AND READOUT CONTINUITY AS THE SAID TAPE MOVES LONGITUDINAL BETWEEN SAID FIRST AND SECOND ELONGATED RECORDING GAP EDGES.
References Cited (Backward Citations)
US2165307A
Cited
US2188650A
Cited
US2412551A
Cited
US2604321A
Cited
US2697754A
Cited
US2607847A
Cited
US2782043A
Cited
US2773120A
Cited
US2907818A
Cited
US2818464A
Cited
US2933555A
Cited
US2955169A
Cited
US2906827A
Cited
US2976354A
Cited
US2876295A
Cited
US2921989A
Cited
US2918656A
Cited
US2957043A
Cited
US3092296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-08 | 1968-06-08 | 1968-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-08 | 1972-06-08 | 1972-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-08 | 1976-06-08 | 1976-12-08 | $7700.00 | Window Closed / Lapsed |