Patent US3351912A successfully refreshed from Google Patents.
US2889904A
Expired / Lapsed
US
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Apparatus for increasing efficiency of internal combustion engines
Assignee: Individual
•
Filing: 1956-08-24
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Granted: 1959-06-09
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Expires: 1976-08-24
Abstract
No abstract record available.
Inventors
- 👤 Martinoli Sante Tino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:19
CPC Classifications
F; F02; F02B; F02B47/00; F02B47/04; F02B47/08; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1793555A
Cited
US1780499A
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US2115878A
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US2075272A
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US2596736A
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US2764962A
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US2741233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |