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Patent US3087474A successfully refreshed from Google Patents.
US3087474A
Expired / Lapsed
US
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Oil vapor condenser
Assignee: Individual
•
Filing: 1961-10-31
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Granted: 1963-04-30
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Expires: 1981-10-31
Abstract
No abstract record available.
Inventors
- 👤 Catha Ralph Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:29
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2154072A
Cited
US2731958A
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US1461726A
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US2057001A
Cited
US2311036A
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US2354722A
Cited
US2821174A
Cited
US2979038A
Cited
US2984226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |