US2525131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diesel engine
Assignee: HALLETT Manufacturing CO
•
Filing: 1946-04-15
•
Granted: 1950-10-10
•
Expires: 1966-04-15
Abstract
No abstract record available.
Inventors
- 👤 Elton C Hallett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:18
CPC Classifications
F; F02; F02B; F02B69/00; F02B19/00; F02B19/14; F02B3/00; F02B3/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1413466A
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US983646A
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FR424671A
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US1093659A
Cited
US1477984A
Cited
US1520353A
Cited
US1532788A
Cited
US2242274A
Cited
US2332928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |