Patent US3106670A successfully refreshed from Google Patents.
US3106670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic field structure for loudspeakers
Assignee: RCA Corp
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Filing: 1960-04-21
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Granted: 1963-10-08
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Expires: 1980-04-21
Abstract
No abstract record available.
Inventors
- 👤 David E Laux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:33
CPC Classifications
H; H04; H04R; H04R9/00; H04R9/02; H04R9/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A MAGNETIC FIELD STRUCTURE FOR A TRANSDUCER, THE COMBINATION OF A PERMANENT MAGNET, A MAGNETIC POLE CAP FOR SAID MAGNET, SAID MAGNET AND SAID POLE CAP HAVING SUBSTANTIALLY AXIALLY ALIGNED OPENINGS, AND A PIN MEMBER IN SAID OPENINGS DEFORMED LATERALLY WITHIN SAID OPENINGS AND APPLYING LATERAL PRESSURE AGAINST THE WALLS OF SAID OPENINGS AND FIRMLY ENGAGING THE WALLS OF SAID OPENINGS AND THEREBY CONNECTING SAID PERMANENT MAGNET TO SAID POLE CAP.
Claim 2
Dependent Claim
72 words
IN A MAGNETIC FIELD STRUCTURE FOR A TRANSDUCER, THE COMBINATION OF A PERMANENT MAGNET, A MAGNETIC POLE CAP FOR SAID MAGNET, SAID MAGNET AND SAID POLE CAP HAVING SUBSTANTIALLY AXIALLY ALIGNED OPENINGS, AND A PIN MEMBER IN SAID OPENINGS DEFORMED LATERALLY WITHIN SAID OPENINGS AND APPLYING LATERAL PRESSURE AGAINST THE WALLS OF SAID OPENINGS AND FIRMLY ENGAGING THE WALLS OF SAID OPENINGS AND THEREBY CONNECTING SAID PERMANENT MAGNET TO SAID POLE CAP.
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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) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |