Patent US1780231A successfully refreshed from Google Patents.
Patent US2652039A successfully refreshed from Google Patents.
US2652039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supply system for combustible mixture for internal-combustion engines
Assignee: Individual
•
Filing: 1949-02-14
•
Granted: 1953-09-15
•
Expires: 1969-02-14
Abstract
No abstract record available.
Inventors
- 👤 Weslake Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:01
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/10; F02B19/1019; F02B19/1023; F02B19/1028; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1054080A
Cited
US1374158A
Cited
US1722799A
Cited
US1750063A
Cited
US1733696A
Cited
US1722404A
Cited
US2011992A
Cited
US2086427A
Cited
US1998708A
Cited
US2133592A
Cited
US2098875A
Cited
US2179143A
Cited
US2242990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |