Patent US4744003A successfully refreshed from Google Patents.
Patent US3215440A successfully refreshed from Google Patents.
US3215440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph cartridge
Assignee: Euphonics Corp
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Filing: 1962-02-15
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Granted: 1965-11-02
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Expires: 1982-02-15
Abstract
No abstract record available.
Inventors
- 👤 John F Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:22
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN A PHONOGRAPH CARTRIDGE, INCLUDING A CASING, A PAIR OF PIEZOELECTRIC ELEMENTS MOUNTED IN SAID CASING, SAID ELEMENTS HAVING ELONGATED BODIES, MEANS ENGAGING ONE END OF EACH ELEMENT AND SUPPORTING THE ELEMENTS IN SPACED PARALLEL RELATIONSHIP, AND A GENERALLY V-SHAPED COUPLING MEMBER HAVING A PAIR OF LEGS ENGAGED AT ENDS THEREOF WITH OTHER ENDS OF SAID ELEMENTS; A NEEDLE STRUCTURE COMPRISING A FRAME ROTATABLE 180* ON AN AXIS PARALLEL TO SAID CASING BETWEEN TWO STABILIZED POSITIONS ON THE CASING, SAID FRAME HAVING TWO NEEDLES INTEGRAL THEREWITH, A DIFFERENT ONE OF SAID NEEDLES ENGAGING THE APICAL END OF SAID COUPLING MEMBER IN EACH OF SAID POSITIONS OF SAID FRAME.
Claim 2
Dependent Claim
108 words
IN A PHONOGRAPH CARTRIDGE, INCLUDING A CASING, A PAIR OF PIEZOELECTRIC ELEMENTS MOUNTED IN SAID CASING, SAID ELEMENTS HAVING ELONGATED BODIES, MEANS ENGAGING ONE END OF EACH ELEMENT AND SUPPORTING THE ELEMENTS IN SPACED PARALLEL RELATIONSHIP, AND A GENERALLY V-SHAPED COUPLING MEMBER HAVING A PAIR OF LEGS ENGAGED AT ENDS THEREOF WITH OTHER ENDS OF SAID ELEMENTS; A NEEDLE STRUCTURE COMPRISING A FRAME ROTATABLE 180* ON AN AXIS PARALLEL TO SAID CASING BETWEEN TWO STABILIZED POSITIONS ON THE CASING, SAID FRAME HAVING TWO NEEDLES INTEGRAL THEREWITH, A DIFFERENT ONE OF SAID NEEDLES ENGAGING THE APICAL END OF SAID COUPLING MEMBER IN EACH OF SAID POSITIONS OF SAID FRAME.
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |