Patent US3443552A successfully refreshed from Google Patents.
US3443552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine,fuel supply system and process
Assignee: Individual
•
Filing: 1966-12-13
•
Granted: 1969-05-13
•
Expires: 1986-12-13
Abstract
No abstract record available.
Inventors
- 👤 Ernest A Von Seggern
- 👤 Henry E Von Seggern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:09
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/10; F02B19/1019; F02B19/108; F02B19/1085; F02B19/1023; F02B19/1028; F02M; F02M47/00; F02M47/04; F02M47/043; F02M71/00; F02M71/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |