US2816743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stirrer bearing and adaptor
Assignee: American Oil Co
•
Filing: 1955-04-29
•
Granted: 1957-12-17
•
Expires: 1975-04-29
Abstract
No abstract record available.
Inventors
- 👤 Kirkland Earl Vance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:29
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/05; B01F27/051; B01F27/054; B01F27/0541; B01F27/80; B01F35/00; B01F35/30; B01F2035/35; B01F2035/351; B01F2035/3511; B01F2035/352; B01F2101/00; B01F2101/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA464261A
Cited
US2190220A
Cited
GB606749A
Cited
US2535856A
Cited
GB656657A
Cited
GB687430A
Cited
US2660518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |