US2433089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clearance regulating device for internal-combustion engine valves
Assignee: Individual
•
Filing: 1942-08-22
•
Granted: 1947-12-23
•
Expires: 1962-08-22
Abstract
No abstract record available.
Inventors
- 👤 Otto M Burkhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:52
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/20; F01L1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1213590A
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US1955110A
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US1705464A
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US1609202A
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US1903078A
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US1905888A
Cited
US1930261A
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US1995765A
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US2131507A
Cited
US2176895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-22 | 1951-06-23 | 1951-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-22 | 1955-06-23 | 1955-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-22 | 1959-06-23 | 1959-12-23 | $7700.00 | Window Closed / Lapsed |