US2331352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal separator and process
Assignee: Sharples Corp
•
Filing: 1941-05-21
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Granted: 1943-10-12
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Expires: 1961-05-21
Abstract
No abstract record available.
Inventors
- 👤 Sharples Laurence Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:14
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/04; B04B1/08; Y; Y10; Y10S; Y10S494/00; Y10S494/901
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) | 1946-10-11 | 1947-04-12 | 1947-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-10-11 | 1951-04-12 | 1951-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-10-11 | 1955-04-12 | 1955-10-12 | $7700.00 | Window Closed / Lapsed |