US2602434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic valve operating mechanism operable to vary valve lift and valve timing
Assignee: Worthington Pump and Machinery Corp
•
Filing: 1947-03-29
•
Granted: 1952-07-08
•
Expires: 1967-03-29
Abstract
No abstract record available.
Inventors
- 👤 James C Barnaby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:37
CPC Classifications
F; F01; F01L; F01L9/00; F01L9/10; F01L9/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191412523A
Cited
US1623177A
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US1883980A
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FR739000A
Cited
US1994223A
Cited
US2011864A
Cited
FR748426A
Cited
US2326883A
Cited
US2396392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |