Patent US2667688A successfully refreshed from Google Patents.
US2667688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of constructing rocker arms
Assignee: JOHN R WINTER SR
•
Filing: 1950-08-11
•
Granted: 1954-02-02
•
Expires: 1970-08-11
Abstract
No abstract record available.
Inventors
- 👤 Jr John R Winter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:18
CPC Classifications
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; Y10T29/49696; Y10T29/49758; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992; Y10T29/49938; Y10T29/4994; Y10T403/00; Y10T403/49; Y10T403/71; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1278195A
Cited
US1447520A
Cited
US1793874A
Cited
US1909430A
Cited
US1943631A
Cited
US2176083A
Cited
US2299542A
Cited
US2433631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |