US2833265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for producing efficient ignition and combustion in internal combustion engines
Assignee: Idaho Research Foundation Inc
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Filing: 1956-03-19
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Granted: 1958-05-06
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Expires: 1976-03-19
Abstract
No abstract record available.
Inventors
- 👤 Norman F Hindle
- 👤 Charles D King
- 👤 William R Parish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:38
CPC Classifications
F; F02; F02B; F02B23/00; F02B23/08; F02P; F02P15/00; F02P15/06; H; H01; H01T; H01T13/00; H01T13/20; H01T13/32; 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) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |