Patent US2448950A successfully refreshed from Google Patents.
US2448950A
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Internal-combustion engine and method of operating
Assignee: Texaco Inc
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Filing: 1944-12-14
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Granted: 1948-09-07
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Expires: 1964-12-14
Abstract
No abstract record available.
Inventors
- 👤 Everett M Barber
- 👤 Jay B Malin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:45
CPC Classifications
F; F02; F02M; F02M69/00; F02B; F02B23/00; F02B23/08; F02B23/10; F02B23/104; F02B23/105; F02D; F02D41/00; F02D41/30; F02D41/3011; F02D41/3017; F02D41/3023; F02B2275/00; F02B2275/14; F02B2275/42; F02B2720/00; F02B2720/15; F02B2720/152; F02D19/00; F02D19/02; F02D19/021; F02D19/023; F02D19/024; F02D41/38; F02D2041/389; F02D37/00; F02D37/02; F02P; F02P5/00; F02P5/04; F02P5/045; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-07 | 1952-03-08 | 1952-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-07 | 1956-03-08 | 1956-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-07 | 1960-03-08 | 1960-09-07 | $7700.00 | Window Closed / Lapsed |