Patent US3448729A successfully refreshed from Google Patents.
US3448729A
Expired / Lapsed
US
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Vapor and droplet separator for ebullient-cooled engines
Assignee: Dow Chemical Co
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Filing: 1967-02-08
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Granted: 1969-06-10
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Expires: 1987-02-08
Abstract
No abstract record available.
Inventors
- 👤 Curtis P Parsons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:16
CPC Classifications
F; F01; F01P; F01P3/00; F01P3/22; F01P2003/2214; F01P2003/2264; F01P2060/00; F01P2060/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1731583A
Cited
US1822147A
Cited
US2936746A
Cited
US2767699A
Cited
US2844129A
Cited
US3312204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |