US2545926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air and liquid cooling apparatus and method
Assignee: Hudson Engineering Corp
•
Filing: 1949-06-06
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Granted: 1951-03-20
•
Expires: 1969-06-06
Abstract
No abstract record available.
Inventors
- 👤 Bach Neal B Lau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:37
CPC Classifications
F; F28; F28C; F28C1/00; F28C1/14; F28C1/04; F28F; F28F25/00; F28F25/10; F28F25/12; F28F27/00; F28F27/003; Y; Y02; Y02B; Y02B30/00; Y02B30/70; Y10; Y10S; Y10S261/00; Y10S261/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1966275A
Cited
US1968778A
Cited
US2075036A
Cited
US2187398A
Cited
US2353233A
Cited
US2387473A
Cited
US2454883A
Cited
US2480286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |