US2842956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for detecting uncontrolled combustion within internal combustion engines
Assignee: Pure Oil Co
•
Filing: 1953-12-28
•
Granted: 1958-07-15
•
Expires: 1973-12-28
Abstract
No abstract record available.
Inventors
- 👤 Otto A Uyehara
- 👤 Philip S Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:50
CPC Classifications
F; F02; F02P; F02P17/00; F02P17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1914496A
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US2133437A
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US2414457A
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US2543141A
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US2445245A
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US2641719A
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US2660883A
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DE831166C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |