Patent US3078351A successfully refreshed from Google Patents.
US3078351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound or pulse recording and reproducing apparatus
Assignee: Svenska AB Gasaccumulator
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Filing: 1958-11-24
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Granted: 1963-02-19
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Expires: 1978-11-24
Abstract
No abstract record available.
Inventors
- 👤 Granqvist Carl-Erik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:26
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/42; H04M3/487
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
AN ARRANGEMENT FOR RECORDING AND REPRODUCTION OF ELECTRICAL PULSES COMPRISING A ROTATABLE SOUND CARRIER HAVING DISPOSED THEREON A PLURALITY OF INDEPENDENT CONTINUOUSLY RUNNING SOUND CHANNELS, TRANSDUCER HEADS OPERATIVELY ASSOCIATED WITH EACH OF SAID CHANNELS, SWITCHING MEANS FOR UTILIZING EACH OF SAID TRANSDUCER HEADS IN SUCCESSION, SAID SWITCHING MEANS INCLUDING A PLURALITY OF PRIMARY TRANSFORMER CORE PORTIONS CONNECTED TO EACH OF
Claim 2
Dependent Claim
60 words
AN ARRANGEMENT FOR RECORDING AND REPRODUCTION OF ELECTRICAL PULSES COMPRISING A ROTATABLE SOUND CARRIER HAVING DISPOSED THEREON A PLURALITY OF INDEPENDENT CONTINUOUSLY RUNNING SOUND CHANNELS, TRANSDUCER HEADS OPERATIVELY ASSOCIATED WITH EACH OF SAID CHANNELS, SWITCHING MEANS FOR UTILIZING EACH OF SAID TRANSDUCER HEADS IN SUCCESSION, SAID SWITCHING MEANS INCLUDING A PLURALITY OF PRIMARY TRANSFORMER CORE PORTIONS CONNECTED TO EACH OF
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |