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Patent US2622943A successfully refreshed from Google Patents.
US2622943A
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Bearing and seal device for stirrer shafts
Assignee: Universal Oil Products Co
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Filing: 1949-02-23
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Granted: 1952-12-23
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Expires: 1969-02-23
Abstract
No abstract record available.
Inventors
- 👤 Wankat Charles
- 👤 Frederick J Gervais
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:36
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F27/91; B01L; B01L3/00; B01L3/56; B01L3/565; B01F35/00; B01F35/40; B01F35/41; B01F35/411; B01F35/4111; F; F16; F16C; F16C23/00; F16C23/02; F16C23/04; B01F35/30; B01F2035/35; B01F2035/351; B01F2035/352
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |