US2496623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stroke cycle internal-combustion engine
Assignee: Individual
•
Filing: 1947-04-18
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Granted: 1950-02-07
•
Expires: 1967-04-18
Abstract
No abstract record available.
Inventors
- 👤 John E Fragale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:58
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/10; F02M25/12; F02B; F02B43/00; F02B43/10; F02B2043/106; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y02T10/30; Y10; Y10S; Y10S123/00; Y10S123/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1731228A
Cited
GB189602024A
Cited
US765159A
Cited
US1214859A
Cited
US1214858A
Cited
US1690321A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |