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Patent US2914048A successfully refreshed from Google Patents.
US2914048A
Expired / Lapsed
US
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Internal-combustion engine with adjustable combustion chamber
Assignee: Individual
•
Filing: 1957-04-30
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Granted: 1959-11-24
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Expires: 1977-04-30
Abstract
No abstract record available.
Inventors
- 👤 Philipp Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:05
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/04; F02B75/041; F02B75/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1848831A
Cited
US757632A
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US1301675A
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US1564906A
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US1437929A
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GB257719A
Cited
US1820878A
Cited
US2025020A
Cited
FR884757A
Cited
US2618249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |