US3448731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle vapor recovery system
Assignee: Atlantic Richfield Co
•
Filing: 1968-03-25
•
Granted: 1969-06-10
•
Expires: 1988-03-25
Abstract
No abstract record available.
Inventors
- 👤 Harold D Daigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:12
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/08; F02M25/089
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2773492A
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US3048157A
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US2986133A
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US2965086A
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US3241494A
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US3001519A
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US3093124A
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US3162235A
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US3172348A
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US3221724A
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 |