US2889004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid pickup gas treating device
Assignee: American Air Filter Co Inc
•
Filing: 1952-09-08
•
Granted: 1959-06-02
•
Expires: 1972-09-08
Abstract
No abstract record available.
Inventors
- 👤 Nutting Arthur
- 👤 Robert W Sexton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:17
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/02; B01D47/024; B01D47/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US948432A
Cited
US1651354A
Cited
US1782735A
Cited
US1958383A
Cited
DE509927C
Cited
US2007759A
Cited
US2015174A
Cited
US2682394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |