Patent US2257143A successfully refreshed from Google Patents.
US1389016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbureter
Assignee: Individual
•
Filing: 1918-08-09
•
Granted: 1921-08-30
•
Expires: 1938-08-09
Abstract
No abstract record available.
Inventors
- 👤 Alfred C Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:36
CPC Classifications
F; F02; F02M; F02M19/00; F02M19/02; F02M19/0217; F02M9/00; F02M9/12; F02M9/127; Y; Y10; Y10S; Y10S261/00; Y10S261/08; Y10S261/18; Y10S261/23; Y10S261/53; Y10S261/73
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1924-08-29 | 1925-02-28 | 1925-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-08-29 | 1929-02-28 | 1929-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-08-29 | 1933-02-28 | 1933-08-30 | $7700.00 | Window Closed / Lapsed |