US3444335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph pick-up with de-coupling of the stylus mass
Assignee: Individual
•
Filing: 1965-01-04
•
Granted: 1969-05-13
•
Expires: 1985-01-04
Abstract
No abstract record available.
Inventors
- 👤 John Walton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:48
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2373181A
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US2868892A
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US2955170A
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US3043921A
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US3040136A
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GB942532A
Cited
US3075054A
Cited
US3196216A
Cited
US3236956A
Cited
US3268231A
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US3327069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |