US3489654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporation system and process
Assignee: American Hydrotherm Corp
•
Filing: 1967-01-09
•
Granted: 1970-01-13
•
Expires: 1987-01-09
Abstract
No abstract record available.
Inventors
- 👤 Paul L Geiringer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:15
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/26; B01D1/28; B01D1/2803; B01D1/2812; B01D1/284; B01D1/2843; B01D3/00; B01D3/06; Y; Y10; Y10S; Y10S159/00; Y10S159/08; Y10S203/00; Y10S203/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2899366A
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US2613177A
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US2759882A
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US2893926A
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US3119752A
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GB937623A
Cited
US3152053A
Cited
US3259552A
Cited
US3320137A
Cited
US3391062A
Cited
US3405037A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |