US2393594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operation of internal-combustion engines
Assignee: EIDP Inc
•
Filing: 1941-07-08
•
Granted: 1946-01-29
•
Expires: 1961-07-08
Abstract
No abstract record available.
Inventors
- 👤 Clyde O Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:37
CPC Classifications
C; C10; C10L; C10L1/00; C10L8/00; C10L2200/00; C10L2200/02; C10L2200/0259; C10L2200/029; C10L2200/0295; C10L2270/00; C10L2270/02; C10L2270/026
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1949-01-28 | 1949-07-30 | 1950-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-01-28 | 1953-07-30 | 1954-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-01-28 | 1957-07-30 | 1958-01-29 | $7700.00 | Window Closed / Lapsed |