US2509031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cooling fluids
Assignee: Individual
•
Filing: 1946-03-01
•
Granted: 1950-05-23
•
Expires: 1966-03-01
Abstract
No abstract record available.
Inventors
- 👤 Bockmeyer Eldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:29
CPC Classifications
F; F28; F28D; F28D5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US87144A
Cited
US1291926A
Cited
US1908463A
Cited
US2121115A
Cited
US2218596A
Cited
US2128890A
Cited
AU114639A
Cited
US2353233A
Cited
US2379932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |