US2925722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expendable liquid evaporative coolant system
Assignee: Individual
•
Filing: 1958-05-07
•
Granted: 1960-02-23
•
Expires: 1978-05-07
Abstract
No abstract record available.
Inventors
- 👤 Charles M Blackburn
- 👤 Walter W Hagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:08
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/20; H05K7/2029; H05K7/20345; B; B64; B64D; B64D13/00; B64D13/06; B64D13/08; Y; Y10; Y10S; Y10S62/00; Y10S62/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US552481A
Cited
US1791964A
Cited
US2304151A
Cited
US2566301A
Cited
US2610472A
Cited
US2561633A
Cited
US2831329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |