US2447513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injection means for free piston engines
Assignee: LIMA HAMILTON CORP
•
Filing: 1944-08-04
•
Granted: 1948-08-24
•
Expires: 1964-08-04
Abstract
No abstract record available.
Inventors
- 👤 Frank M Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:01
CPC Classifications
F; F02; F02B; F02B71/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US998463A
Cited
US1897044A
Cited
GB427668A
Cited
US2064976A
Cited
GB475730A
Cited
US2163313A
Cited
US2246701A
Cited
GB509111A
Cited
CH210884A
Cited
US2344058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-24 | 1952-02-23 | 1952-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-24 | 1956-02-23 | 1956-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-24 | 1960-02-23 | 1960-08-24 | $7700.00 | Window Closed / Lapsed |