US2680599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporative condenser
Assignee: REFRIGERATION ENGINEERING Inc
•
Filing: 1949-06-10
•
Granted: 1954-06-08
•
Expires: 1969-06-10
Abstract
No abstract record available.
Inventors
- 👤 Daniel D Wile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:22
CPC Classifications
F; F24; F24F; F24F5/00; F24F5/0007; F24F5/0035; F28; F28D; F28D5/00; F28D5/02; Y; Y02; Y02B; Y02B30/00; Y02B30/54
Claims Analysis
Total Claims: 0
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US2141954A
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US2454883A
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US2379932A
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US2513010A
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US2493141A
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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) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |