US2229552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for injecting fuel into internal combustion engines
Assignee: Individual
•
Filing: 1937-08-26
•
Granted: 1941-01-21
•
Expires: 1957-08-26
Abstract
No abstract record available.
Inventors
- 👤 Samuel P Cowardin
- 👤 Harry A Cowardin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:58
CPC Classifications
F; F02; F02M; F02M61/00; F02M61/04; F02M61/08; F02M67/00; F02M67/10; F02M67/12; F02M69/00; F02M69/08
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) | 1944-01-21 | 1944-07-22 | 1945-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-01-21 | 1948-07-22 | 1949-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-01-21 | 1952-07-22 | 1953-01-21 | $7700.00 | Window Closed / Lapsed |