US2568673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistance-type phonograph pickup
Assignee: Admiral Corp
•
Filing: 1946-09-19
•
Granted: 1951-09-18
•
Expires: 1966-09-19
Abstract
No abstract record available.
Inventors
- 👤 Neil E Washburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:30
CPC Classifications
H; H04; H04R; H04R21/00; H04R21/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2415403A
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US2429137A
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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) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |