Patent US2379993A successfully refreshed from Google Patents.
US2379993A
Expired / Lapsed
US
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Centrifugal
Assignee: Individual
•
Filing: 1940-12-07
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Granted: 1945-07-10
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Expires: 1960-12-07
Abstract
No abstract record available.
Inventors
- 👤 Sehutte August Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:54
CPC Classifications
B; B04; B04B; B04B15/00; B04B15/06; B01; B01D; B01D9/00; B01D9/0004; C; C10; C10G; C10G73/00; C10G73/02; C10G73/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-07-09 | 1949-01-08 | 1949-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-07-09 | 1953-01-08 | 1953-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-07-09 | 1957-01-08 | 1957-07-10 | $7700.00 | Window Closed / Lapsed |