Patent US2943457A successfully refreshed from Google Patents.
US2943457A
Expired / Lapsed
US
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Control system for winter operation of air-cooled condensers
Assignee: Recold Corp
•
Filing: 1959-03-13
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Granted: 1960-07-05
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Expires: 1979-03-13
Abstract
No abstract record available.
Inventors
- 👤 Daniel D Wile
- 👤 David S Brainard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:33
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/02; F25B49/027; Y; Y10; Y10S; Y10S62/00; Y10S62/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2244312A
Cited
US2261593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |