US2900798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-exchanger in which a multi-component medium is cooled
Assignee: US Philips Corp
•
Filing: 1953-05-29
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Granted: 1959-08-25
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Expires: 1973-05-29
Abstract
No abstract record available.
Inventors
- 👤 Jonkers Cornelius Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:07
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25B; F25B9/00; F25B9/002; F25B9/004; F25J5/00; F25J5/002; F25J2205/00; F25J2205/24; F25J2220/00; F25J2220/40; F25J2270/00; F25J2270/90; Y; Y10; Y10S; Y10S62/00; Y10S62/902; Y10S62/905; Y10S62/906; Y10S62/907
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1794030A
Cited
US1842263A
Cited
US1779135A
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US1882640A
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US2090454A
Cited
US2097434A
Cited
US2648205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |