Patent US2634402A successfully refreshed from Google Patents.
US2634402A
Expired / Lapsed
US
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Phonograph selector system
Assignee: AMI Industries Inc
•
Filing: 1948-02-02
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Granted: 1953-04-07
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Expires: 1968-02-02
Abstract
No abstract record available.
Inventors
- 👤 Vanderzee Harry Herbert
- 👤 Robert A Mccallum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:12
CPC Classifications
G; G07; G07F; G07F17/00; G07F17/30; G07F17/305; G11; G11B; G11B17/00; G11B17/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2136630A
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US2167061A
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US2296760A
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US2233026A
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US2319788A
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US2327429A
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US2324908A
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US2346238A
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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) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |