US2587206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal separator
Assignee: Individual
•
Filing: 1950-02-27
•
Granted: 1952-02-26
•
Expires: 1970-02-27
Abstract
No abstract record available.
Inventors
- 👤 John R Pattinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:16
CPC Classifications
B; B04; B04B; B04B1/00; B01; B01D; B01D21/00; B01D21/26; B01D21/262
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |