US1422987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for controlling the supply of combustible mixture to internalcombustion engines
Assignee: Individual
•
Filing: 1918-05-03
•
Granted: 1922-07-18
•
Expires: 1938-05-03
Abstract
No abstract record available.
Inventors
- 👤 Keith George
- 👤 Whatmough Wilfred Ambrose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:41
CPC Classifications
F; F02; F02M; F02M21/00; F02B; F02B43/00; F02M2700/00; F02M2700/12; F02M2700/126
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) | 1925-07-17 | 1926-01-16 | 1926-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-07-17 | 1930-01-16 | 1930-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-07-17 | 1934-01-16 | 1934-07-18 | $7700.00 | Window Closed / Lapsed |