Patent US2944599A successfully refreshed from Google Patents.
US2944599A
Expired / Lapsed
US
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Flash evaporator
Assignee: Richardsons Westgarth and Co Ltd
•
Filing: 1957-04-02
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Granted: 1960-07-12
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Expires: 1977-04-02
Abstract
No abstract record available.
Inventors
- 👤 Frankel Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:37
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/06; B01D3/065; C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/06; Y; Y10; Y10S; Y10S203/00; Y10S203/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |