US2580951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion chamber for internalcombustion engines
Assignee: Individual
•
Filing: 1947-12-19
•
Granted: 1952-01-01
•
Expires: 1967-12-19
Abstract
No abstract record available.
Inventors
- 👤 Pescara Raul Pateras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:40
CPC Classifications
F; F02; F02B; F02B23/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1722404A
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AT126449B
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US2016734A
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US1861045A
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US2003571A
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US2214941A
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US2282435A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |