Patent US3077522A successfully refreshed from Google Patents.
US3077522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereophonic pickup cartridge
Assignee: Shure Inc
•
Filing: 1959-02-27
•
Granted: 1963-02-12
•
Expires: 1979-02-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Lee Gunter
- 👤 Anderson Carl Roger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:15
CPC Classifications
H; H04; H04R; H04R11/00; H04R11/08; H04R11/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
AN ARMATURE-STYLUS SUBASSEMBLY FOR A MAGNETIC PICKUP CARTRIDGE COMPRISED OF TWO ELECTROMAGNETIC SYSTEMS EACH TERMINATING IN A PAIR OF SPACED-APART POLE PIECES ARRANGED TO DESCRIBE A COMMON MAGNETIC GAP AND TO FORM A SOCKET HAVING A RECESS SUBSTANTIALLY CO-EXTENSIVE WITH SAID GAP, SAID SUBASSEMBLY COMPRISING A SUPPORTING MEMBER, A BEARING OF AN ELASTOMERIC MATERIAL HAVING A CHANNEL THEREIN RETAINED WITHIN SAID SUPPORTING MEMBER, AN ARMATURE COMPRISING A PERMANENT MAGNET OPERATIVELY MOUNTED IN SAID BEARING CHANNEL FOR ANGULAR VIBRATION SUBSTANTIALLY ABOUT A POINT INTERMEDIATE THE POLES OF SAID MAGNET, MEANS INCLUDING A STYLUS CONNECTED WITH SAID ARMATURE FOR TRANSMITTING VIBRATIONS THERETO, AND SPRING MEANS CONNECTING
References Cited (Backward Citations)
GB336648A
Cited
GB362494A
Cited
US2373181A
Cited
US2507708A
Cited
US2578809A
Cited
US2771515A
Cited
US2875282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |