US2997131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moisture separator
Assignee: Stewart Warner Corp
•
Filing: 1957-09-04
•
Granted: 1961-08-22
•
Expires: 1977-09-04
Abstract
No abstract record available.
Inventors
- 👤 John T Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:33
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10; B01D46/12; B01D45/00; B01D45/04; B01D45/06; B01D45/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1521348A
Cited
CH11343A
Cited
GB190410471A
Cited
FR531515A
Cited
US1544950A
Cited
US1926262A
Cited
US1946744A
Cited
US2146071A
Cited
US2222828A
Cited
US2134544A
Cited
US2302807A
Cited
US2413769A
Cited
US2629459A
Cited
US2801707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |