US3370636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for reconcentrating liquid desiccant
Assignee: Combustion Engineering Inc
•
Filing: 1967-02-03
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Granted: 1968-02-27
•
Expires: 1987-02-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Alex W Francis
- 👤 Charles O Meyers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:26
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/34; B01D3/343; B01D3/346; B01D1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US378843A
Cited
CA610314A
Cited
FR365945A
Cited
US1461640A
Cited
US2578469A
Cited
US3206916A
Cited
US3182434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |