US3487820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel supply systems for internal combustion engines
Assignee: ZF International UK Ltd
•
Filing: 1968-01-09
•
Granted: 1970-01-06
•
Expires: 1988-01-09
Abstract
No abstract record available.
Inventors
- 👤 Roger Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:08
CPC Classifications
F; F02; F02M; F02M69/00; F02M69/16; F02M69/26; F02M69/12; F02M69/125; F02M69/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2419171A
Cited
US2623509A
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US2667918A
Cited
US2502997A
Cited
US2806519A
Cited
US2876755A
Cited
US2852011A
Cited
US3320938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |