US2584674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for recapturing useful fuel from the exhaust gases of internal-combustion engines
Assignee: Individual
•
Filing: 1951-03-14
•
Granted: 1952-02-05
•
Expires: 1971-03-14
Abstract
No abstract record available.
Inventors
- 👤 Costa Bartholomew Da
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:18
CPC Classifications
F; F02; F02M; F02M26/00; F02M26/13; F02M26/14; F02M26/35; F02M26/36; Y; Y10; Y10S; Y10S55/00; Y10S55/30
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) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |