US2443029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel composition
Assignee: Individual
•
Filing: 1944-07-14
•
Granted: 1948-06-08
•
Expires: 1964-07-14
Abstract
No abstract record available.
Inventors
- 👤 Elkan Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:14
CPC Classifications
C; C10; C10L; C10L11/00; C10L11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US44940A
Cited
US1682195A
Cited
GB190314014A
Cited
US836897A
Cited
GB191209065A
Cited
GB191204377A
Cited
US1290992A
Cited
US1811935A
Cited
US2227256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |