US2947152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger for separating out constituents from a gas by cooling
Assignee: US Philips Corp
•
Filing: 1956-10-29
•
Granted: 1960-08-02
•
Expires: 1976-10-29
Abstract
No abstract record available.
Inventors
- 👤 Bloem Aldert Teunis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:09
CPC Classifications
F; F25; F25J; F25J5/00; Y; Y10; Y10S; Y10S165/00; Y10S165/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1478750A
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US1561898A
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US1725906A
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US2294137A
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US2663170A
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US2492298A
Cited
US2500501A
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US2585288A
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US2585912A
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US2690060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |