Patent US2912171A successfully refreshed from Google Patents.
US2912171A
Expired / Lapsed
US
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Slinger construction
Assignee: Carrier Corp
•
Filing: 1957-05-01
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Granted: 1959-11-10
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Expires: 1977-05-01
Abstract
No abstract record available.
Inventors
- 👤 Richard H Merrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:23
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/21; B01F23/213; B01F23/2131; B01F23/21311; F; F24; F24F; F24F6/00; F24F6/02; F24F6/06; Y; Y10; Y10S; Y10S118/00; Y10S118/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1667291A
Cited
US1616545A
Cited
US1948278A
Cited
US2091159A
Cited
US2064271A
Cited
US2448297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |