US3048157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air pollution abatement system
Assignee: Union Oil Company of California
•
Filing: 1959-06-30
•
Granted: 1962-08-07
•
Expires: 1979-06-30
Abstract
No abstract record available.
Inventors
- 👤 James B Gregory
- 👤 Charles C Moore
- 👤 Howard D Emerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:42
CPC Classifications
F; F02; F02M; F02M5/00; F02M5/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1286528A
Cited
US1909390A
Cited
US2285830A
Cited
US2364605A
Cited
US2670760A
Cited
US2618292A
Cited
US2647735A
Cited
US2885865A
Cited
US2894736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |