Patent US2227325A successfully refreshed from Google Patents.
US2582948A
Expired / Lapsed
US
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Phonograph pickup unit
Assignee: Motorola Solutions Inc
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Filing: 1947-05-06
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Granted: 1952-01-22
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Expires: 1967-05-06
Abstract
No abstract record available.
Inventors
- 👤 William E Cairnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:40
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/02; G11B3/10; G11B3/42; H; H04; H04R; H04R1/00; H04R1/16; H04R1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US962081A
Cited
US1930544A
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US2174692A
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US2331122A
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US2374842A
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US2320416A
Cited
US2325343A
Cited
US2455913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |