US2740393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder block and method of construction
Assignee: Individual
•
Filing: 1952-10-27
•
Granted: 1956-04-03
•
Expires: 1972-10-27
Abstract
No abstract record available.
Inventors
- 👤 Roscoe C Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:25
CPC Classifications
F; F02; F02F; F02F7/00; F02F7/0002; F02F7/0012; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/22; F02B2075/1804; F02B2075/1816; F02F2200/00; F02F2200/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1402695A
Cited
GB259313A
Cited
US2189600A
Cited
US2397434A
Cited
US2426877A
Cited
US2486927A
Cited
US2491630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |