Patent US3189684A successfully refreshed from Google Patents.
US3189684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for recording and reproducing signals with magnetic tape
Assignee: Individual
•
Filing: 1959-12-08
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Granted: 1965-06-15
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Expires: 1979-12-08
Abstract
No abstract record available.
Inventors
- 👤 William A Wootten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:58
CPC Classifications
G; G11; G11B; G11B11/00; G11B11/10; G11B11/115; G11B11/11; G11B5/00; Y; Y10; Y10S; Y10S84/00; Y10S84/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
APPARATUS FOR RECORDING AN ELECTRICAL SIGNAL CURRENT IN MAGNETIC TAPE COMPRISING: A RECORDING MAGNET INCLUDING A GAP FOR PRODUCING A SINGLE CONSTANT UNIDIRECTIONAL MAGNETIC FIELD THEREACROSS, MEANS FOR GUIDING A TRAVELLING MAGNETIC TAPE THROUGH SAID GAP AND GENERALLY TRANSVERSELY OF SAID MAGNETIC FIELD, AN ELECTRON GUN FOR GENERATING A PENCIL SHAPED ELECTRON BEAM AND DIRECTING IT TRANSVERSELY THROUGH SAID GAP SUBSTANTIALLY AT RIGHT ANGLES TO THE FIELD ACROSS SAID GAP, AND GENERALLY LONGITUDINALLY OF THE DIRECTION OF TAPE TRAVEL THROUGH SAID GAP, AND IN CLOSE PROXIMITY TO THE PORTION OF THE TAPE WITHIN THE GAP, WHEREBY THE MAGNETIC FIELD SURROUNDING SAID BEAM REACTS WITH SAID MAGNETIC FIELD TO PRODUCE A RESULTANT ANGLE MODULATED
Claim 2
Dependent Claim
113 words
APPARATUS FOR RECORDING AN ELECTRICAL SIGNAL CURRENT IN MAGNETIC TAPE COMPRISING: A RECORDING MAGNET INCLUDING A GAP FOR PRODUCING A SINGLE CONSTANT UNIDIRECTIONAL MAGNETIC FIELD THEREACROSS, MEANS FOR GUIDING A TRAVELLING MAGNETIC TAPE THROUGH SAID GAP AND GENERALLY TRANSVERSELY OF SAID MAGNETIC FIELD, AN ELECTRON GUN FOR GENERATING A PENCIL SHAPED ELECTRON BEAM AND DIRECTING IT TRANSVERSELY THROUGH SAID GAP SUBSTANTIALLY AT RIGHT ANGLES TO THE FIELD ACROSS SAID GAP, AND GENERALLY LONGITUDINALLY OF THE DIRECTION OF TAPE TRAVEL THROUGH SAID GAP, AND IN CLOSE PROXIMITY TO THE PORTION OF THE TAPE WITHIN THE GAP, WHEREBY THE MAGNETIC FIELD SURROUNDING SAID BEAM REACTS WITH SAID MAGNETIC FIELD TO PRODUCE A RESULTANT ANGLE MODULATED
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |