US3488261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor compression evaporation with vent condenser and engine exhaust gas boiler
Assignee: Aqua Chem Inc
•
Filing: 1967-01-30
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Granted: 1970-01-06
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Expires: 1987-01-30
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Loebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:13
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/045; B; B01; B01D; B01D1/00; B01D1/28; B01D1/284; B01D1/2843; B01D1/289; C02F1/18; Y; Y10; Y10S; Y10S203/00; Y10S203/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1150713A
Cited
US2441361A
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US2537259A
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US2637684A
Cited
US2589406A
Cited
US3245883A
Cited
US3252501A
Cited
US3236748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |