US2602644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporator
Assignee: Individual
•
Filing: 1949-09-19
•
Granted: 1952-07-08
•
Expires: 1969-09-19
Abstract
No abstract record available.
Inventors
- 👤 Charles O Sandstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:18
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/02; C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/042; Y; Y10; Y10S; Y10S159/00; Y10S159/41
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1941587A
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DE560705C
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US2340756A
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US2351163A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |