US2479267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for promoting recirculation and reducing ebullition and priming in evaporators
Assignee: Individual
•
Filing: 1945-09-11
•
Granted: 1949-08-16
•
Expires: 1965-09-11
Abstract
No abstract record available.
Inventors
- 👤 Sandford Dent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:55
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/16; B; B01; B01D; B01D1/00; B01D1/02; Y; Y10; Y10S; Y10S159/00; Y10S159/04; Y10S159/901; 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) | 1952-08-15 | 1953-02-14 | 1953-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-15 | 1957-02-14 | 1957-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-15 | 1961-02-14 | 1961-08-16 | $7700.00 | Window Closed / Lapsed |