Patent US2991331A successfully refreshed from Google Patents.
US2991331A
Expired / Lapsed
US
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Static electricity eliminator and conditioner for phonograph record discs
Assignee: Astatic Corp
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Filing: 1956-02-28
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Granted: 1961-07-04
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Expires: 1976-02-28
Abstract
No abstract record available.
Inventors
- 👤 Ross James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:45
CPC Classifications
H; H05; H05F; H05F3/00; H05F3/06; G; G11; G11B; G11B3/00; G11B3/58; G11B3/5809; G11B3/5818; G11B3/5854; G11B3/5863
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2048490A
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US2313126A
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US2300923A
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US2373960A
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US2479882A
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US2601988A
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US2595226A
Cited
US2575999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |