US1634243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and mechanism for centrifugal treatment of substances
Assignee: Sharples Specialty Co
•
Filing: 1921-10-07
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Granted: 1927-06-28
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Expires: 1941-10-07
Abstract
No abstract record available.
Inventors
- 👤 Leo D Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:32
CPC Classifications
B; B04; B04B; B04B11/00; B04B11/02; 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) | 1930-06-27 | 1930-12-27 | 1931-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-06-27 | 1934-12-27 | 1935-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-06-27 | 1938-12-27 | 1939-06-28 | $7700.00 | Window Closed / Lapsed |