US2500100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal bowl
Assignee: De Laval Separator Co
•
Filing: 1946-08-10
•
Granted: 1950-03-07
•
Expires: 1966-08-10
Abstract
No abstract record available.
Inventors
- 👤 George J Strezynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:14
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/10; B04B1/12; B04B1/04; B04B1/08; B04B7/00; B04B7/08; B04B7/12; B04B7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US528690A
Cited
DE357398C
Cited
US1026271A
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US1113005A
Cited
US1736792A
Cited
US1846076A
Cited
US1921181A
Cited
US2173579A
Cited
US2179941A
Cited
US2331352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |