US2617178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making engine rocker arms
Assignee: Individual
•
Filing: 1949-06-23
•
Granted: 1952-11-11
•
Expires: 1969-06-23
Abstract
No abstract record available.
Inventors
- 👤 James M Leake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:36
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/20; B21K1/205; B21D; B21D53/00; B21D53/84; F; F01; F01L; F01L1/00; F01L1/12; F01L1/18; F01L1/181; Y; Y10; Y10S; Y10S403/00; Y10S403/02; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49702; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/4994; Y10T29/49995; Y10T29/49996; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |