US2426044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer device with liquid lifting capillary surface
Assignee: Servel Inc
•
Filing: 1941-09-19
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Granted: 1947-08-19
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Expires: 1961-09-19
Abstract
No abstract record available.
Inventors
- 👤 William L O'brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:59
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/02; F25B15/06; F25B39/00; F25B39/02; F25B39/026; F28; F28F; F28F13/00; F28F13/06; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62; Y10; Y10S; Y10S165/00; Y10S165/903; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49359
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1996080A
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US1913469A
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US1976800A
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US1878803A
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US1931268A
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US1958403A
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US2133819A
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US2287492A
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US2317234A
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US2350347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-18 | 1951-02-17 | 1951-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-18 | 1955-02-17 | 1955-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-18 | 1959-02-17 | 1959-08-19 | $7700.00 | Window Closed / Lapsed |