US3391679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine fuel vapor recovery system
Assignee: International Motors LLC
•
Filing: 1966-03-28
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Granted: 1968-07-09
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Expires: 1986-03-28
Abstract
No abstract record available.
Inventors
- 👤 Robert D Williams
- 👤 Thomas G Wier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:31
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |