US2786458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two cycle internal combustion engine
Assignee: HURDMAN W BARK
•
Filing: 1956-04-09
•
Granted: 1957-03-26
•
Expires: 1976-04-09
Abstract
No abstract record available.
Inventors
- 👤 Earl B Luttrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:14
CPC Classifications
F; F02; F02B; F02B1/00; F02B2720/00; F02B2720/12; F02B2720/124
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1040153A
Cited
US1156075A
Cited
US1414072A
Cited
US1390572A
Cited
US1437929A
Cited
US1520353A
Cited
US1686236A
Cited
US2393703A
Cited
US2525131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |