US3348601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for reconcentrating liquid absorbent
Assignee: Combustion Engineering Inc
•
Filing: 1964-12-21
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Granted: 1967-10-24
•
Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 Ernest C Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:46
CPC Classifications
C; C10; C10G; C10G5/00; C10G5/04; B; B01; B01D; B01D53/00; B01D53/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1996852A
Cited
US2040837A
Cited
US2089945A
Cited
US2341258A
Cited
US2756029A
Cited
US2944966A
Cited
US2779724A
Cited
US3182434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |