Patent US3538895A successfully refreshed from Google Patents.
US3538895A
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Adjustable mechanical tappet for an engine valve train assembly
Assignee: Johnson Products Inc
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Filing: 1968-07-25
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Granted: 1970-11-10
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Expires: 1988-07-25
Abstract
No abstract record available.
Inventors
- 👤 Charles L Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:21
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/20; F01L1/22; F01L1/12; F01L1/14; F01L1/143; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/21; Y10T74/2101; Y10T74/2107; Y10T74/2142; Y10T74/2151
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |