Yeh; Rudolph E.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Yeh; Rudolph E..The latest application filed is for "directional control valve with integral flow control valve".
- Yeh; Rudolph E. - Elmhurst IL
| Patent | Date |
|---|---|
| Directional control valve with integral flow control valve Grant 4,574,839 - Yeh , et al. March 11, 1 | 1986-03-11 |
| Backhoe Swing Mechanism Grant 3,815,766 - Carlson , et al. June 11, 1 | 1974-06-11 |
| Hydraulic Self-leveling Device For A Loader Bucket Grant 3,794,199 - Bromberek , et al. February 26, 1 | 1974-02-26 |
| Hydraulic Self-leveling Device For A Loader Bucket Grant 3,792,792 - Bromberek , et al. February 19, 1 | 1974-02-19 |
| Cushion Device Grant 3,776,100 - Yeh December 4, 1 | 1973-12-04 |
| Dual Direction Flow Control Valve Grant 3,770,007 - Orth , et al. November 6, 1 | 1973-11-06 |
| Swinging Apparatus Grant 3,630,120 - Carlson , et al. December 28, 1 | 1971-12-28 |
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