US2448131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbureting apparatus
Assignee: Stewart Warner Corp
•
Filing: 1945-01-15
•
Granted: 1948-08-31
•
Expires: 1965-01-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Lynn A Williams
- 👤 Jr William A Marshall
- 👤 Jr William F Gradolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:37
CPC Classifications
F; F02; F02M; F02M69/00; F02M2700/00; F02M2700/43; F02M2700/4397
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2277930A
Cited
US1564039A
Cited
FR634789A
Cited
US2138591A
Cited
GB487176A
Cited
US2216422A
Cited
US2316300A
Cited
US2391755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-31 | 1952-03-01 | 1952-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-31 | 1956-03-01 | 1956-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-31 | 1960-03-01 | 1960-08-31 | $7700.00 | Window Closed / Lapsed |