US2888092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic gas filter
Assignee: General Electric Co
•
Filing: 1957-12-11
•
Granted: 1959-05-26
•
Expires: 1977-12-11
Abstract
No abstract record available.
Inventors
- 👤 James H Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:35
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/02; B03C3/04; B03C3/14; B03C3/155; B01; B01D; B01D46/00; B01D46/18; Y; Y10; Y10S; Y10S55/00; Y10S55/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE337490C
Cited
US2814355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |