US2964127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas filtering apparatus
Assignee: ARCO Manuf Corp
•
Filing: 1959-04-21
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Granted: 1960-12-13
•
Expires: 1979-04-21
Abstract
No abstract record available.
Inventors
- 👤 Paul P Korn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:05
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/06; F; F24; F24F; F24F13/00; F24F13/28; B01D2279/00; B01D2279/50; B01D2279/51
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US720791A
Cited
FR575846A
Cited
US1886460A
Cited
US2564845A
Cited
US2774443A
Cited
US2853154A
Cited
US2895565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |