US3528226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Horizontal vapor-liquid separator
Assignee: Individual
•
Filing: 1968-10-18
•
Granted: 1970-09-15
•
Expires: 1988-10-18
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm S Everett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:42
CPC Classifications
B; B01; B01D; B01D19/00; B01D53/00; B01D53/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US992487A
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US1119897A
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US1687086A
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US2191058A
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US2369020A
Cited
US3201338A
Cited
SU141970A1
Cited
GB931735A
Cited
SU144467A1
Cited
US3220166A
Cited
US3157153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |