US3214175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound recording system
Assignee: Individual
•
Filing: 1961-02-01
•
Granted: 1965-10-26
•
Expires: 1981-02-01
Abstract
No abstract record available.
Inventors
- 👤 Nakamatsu Yoshiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:29
CPC Classifications
G; G11; G11B; G11B25/00; G11B25/04; G11B25/046; G11B21/00; G11B21/02; G11B21/04; G11B21/043; G11B5/00; G11B5/74; G11B5/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
APPARATUS FOR RECORDING AND REPRODUCING SOUND ON A FLAT STATIONARY MAGNETIC RECORDING SHEET, SAID APPARATUS A COMPRISING A TURNTABLE HAVING A RADIALLY EXTENDING SLOT, A STATIONARY PLATE BENEATH SAID TURNTABLE AND HAVING A GUIDE GROOVE, TRANSDUCING MEANS GUIDED IN SAID SLOT FOR COOPERATING WITH THE LOWER SURFACE OF A MAGNETIC SHEET PLACED ABOVE SAID TURNTABLE, AND MEANS SUPPORTING SAID TRANSDUCING MEANS AND ENGAGED IN SAID GROOVE IN THE PLATE FOR DISPLACING THE TRANSDUCING MEANS IN SAID SLOT AS SAID TURNTABLE ROTATES.
Claim 2
Dependent Claim
81 words
APPARATUS FOR RECORDING AND REPRODUCING SOUND ON A FLAT STATIONARY MAGNETIC RECORDING SHEET, SAID APPARATUS A COMPRISING A TURNTABLE HAVING A RADIALLY EXTENDING SLOT, A STATIONARY PLATE BENEATH SAID TURNTABLE AND HAVING A GUIDE GROOVE, TRANSDUCING MEANS GUIDED IN SAID SLOT FOR COOPERATING WITH THE LOWER SURFACE OF A MAGNETIC SHEET PLACED ABOVE SAID TURNTABLE, AND MEANS SUPPORTING SAID TRANSDUCING MEANS AND ENGAGED IN SAID GROOVE IN THE PLATE FOR DISPLACING THE TRANSDUCING MEANS IN SAID SLOT AS SAID TURNTABLE ROTATES.
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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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |