US2382453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous pressure separating device
Assignee: Individual
•
Filing: 1939-03-29
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Granted: 1945-08-14
•
Expires: 1959-03-29
Abstract
No abstract record available.
Inventors
- 👤 Robert M Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:15
CPC Classifications
C; C11; C11B; C11B1/00; C11B1/06; B; B01; B01D; B01D33/00; B01D33/04; B01D33/042; B01D33/044; B01D33/048; B01D33/056; B01D33/44; B01D33/46; B01D33/461; B01D33/70; B01D33/76; B30; B30B; B30B9/00; B30B9/02; B30B9/24; B30B9/246; B01D2201/00; B01D2201/20; B01D2201/204
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) | 1948-08-13 | 1949-02-12 | 1949-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-08-13 | 1953-02-12 | 1953-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-08-13 | 1957-02-12 | 1957-08-14 | $7700.00 | Window Closed / Lapsed |