US3144522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable resistivity semiconductoramplifier phonograph pickup
Assignee: Manlabs Inc
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Filing: 1962-07-09
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Granted: 1964-08-11
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Expires: 1982-07-09
Abstract
No abstract record available.
Inventors
- 👤 Bernstein Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:26
CPC Classifications
H; H04; H04R; H04R23/00; H04R23/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PHONOGRAPH PICKUP DEVICE FOR PRODUCING AN ALTERNATING ELECTRIC CURRENT REPRESENTATIVE OF SOUND SIGNALS, COMPRISING: STYLUS MEANS FOR ENGAGING A MOVING PHONOGRAPH RECORD IMPRESSED IN ACCORDANCE WITH SOUND VIBRATIONS; MECHANICAL VIBRATION MEANS INCLUDING A VIBRATION MEMBER COUPLED TO SAID STYLUS MEANS FOR VIBRATING IN ACCORDANCE WITH SAID SOUND VIBRATIONS; DEFORMABLE TRANSDUCER MEANS DISPOSED ON SAID MEMBER INCLUDING A TRANSDUCER ELEMENT FORMED OF A SINGLE CRYSTAL OF ELECTRICALLY SEMICONDUCTIVE MATERIAL FOR
Claim 2
Dependent Claim
70 words
A PHONOGRAPH PICKUP DEVICE FOR PRODUCING AN ALTERNATING ELECTRIC CURRENT REPRESENTATIVE OF SOUND SIGNALS, COMPRISING: STYLUS MEANS FOR ENGAGING A MOVING PHONOGRAPH RECORD IMPRESSED IN ACCORDANCE WITH SOUND VIBRATIONS; MECHANICAL VIBRATION MEANS INCLUDING A VIBRATION MEMBER COUPLED TO SAID STYLUS MEANS FOR VIBRATING IN ACCORDANCE WITH SAID SOUND VIBRATIONS; DEFORMABLE TRANSDUCER MEANS DISPOSED ON SAID MEMBER INCLUDING A TRANSDUCER ELEMENT FORMED OF A SINGLE CRYSTAL OF ELECTRICALLY SEMICONDUCTIVE MATERIAL FOR
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |