US3531234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camshaft valve gear for engine cylinder head
Assignee: Automobiles Citroen SA
•
Filing: 1968-07-15
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Granted: 1970-09-29
•
Expires: 1988-07-15
Abstract
No abstract record available.
Inventors
- 👤 Raymond A Ravenel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:06
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/26; F01L1/262; F01L1/12; F01L3/00; F01L2003/25; F01L2003/256; F02; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4214; F02F2001/244; F02F2001/245; F02F2001/246
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE503111A
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US1264494A
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US1499573A
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US1798938A
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US2609805A
Cited
US2562404A
Cited
US2665669A
Cited
FR1098374A
Cited
FR1191787A
Cited
US2944536A
Cited
US3255513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |