Patent US2869838A successfully refreshed from Google Patents.
US2869838A
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Agitating device
Assignee: EIDP Inc
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Filing: 1956-04-09
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Granted: 1959-01-20
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Expires: 1976-04-09
Abstract
No abstract record available.
Inventors
- 👤 David F Ryder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:02
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/05; B01F27/11; B01F27/118; B01F27/60; B01F27/73; B01J; B01J19/00; B01J19/18; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/00168; B01J2219/18; B01J2219/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US583751A
Cited
US2118616A
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US2178500A
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US2488884A
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US2534028A
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US2518283A
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US2774577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |