US2496484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetostrictive phonograph pickup
Assignee: Individual
•
Filing: 1946-04-17
•
Granted: 1950-02-07
•
Expires: 1966-04-17
Abstract
No abstract record available.
Inventors
- 👤 Massa Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:25
CPC Classifications
H; H04; H04R; H04R15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US351905A
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US1665740A
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US1974895A
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US1882398A
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US1821836A
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US1882400A
Cited
US1980137A
Cited
US2051200A
Cited
US2348352A
Cited
US2391678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |