Yamaoka; Kojiro
Patent Applications and Registrations
Patent applications and USPTO patent grants for Yamaoka; Kojiro.The latest application filed is for "hydraulic four-wheel drive system".
- Yamaoka; Kojiro - Nishinomiya JP
| Patent | Date |
|---|---|
| Hydraulic four-wheel drive system Grant 4,886,142 - Yamaoka , et al. December 12, 1 | 1989-12-12 |
| Traveling transmission case Grant 4,867,008 - Yamaoka , et al. September 19, 1 | 1989-09-19 |
| Transmission system for working vehicles Grant 4,819,508 - Yamaoka , et al. April 11, 1 | 1989-04-11 |
| Transmission system for working vehicles Grant 4,809,796 - Yamaoka , et al. March 7, 1 | 1989-03-07 |
| HST system driving apparatus Grant 4,784,013 - Yamaoka , et al. November 15, 1 | 1988-11-15 |
| Axle driving apparatus Grant 4,781,259 - Yamaoka , et al. November 1, 1 | 1988-11-01 |
| Power transmission mechanism for a tractor Grant 4,727,759 - Yamaoka , et al. March 1, 1 | 1988-03-01 |
| Transmission for self-propelled working vehicles Grant 4,673,055 - Yamaoka , et al. June 16, 1 | 1987-06-16 |
| Hydraulic steering system Grant 4,664,210 - Yamaoka , et al. May 12, 1 | 1987-05-12 |
| Machine tool Grant 4,110,898 - Yamaoka , et al. September 5, 1 | 1978-09-05 |
| Tractor Driving And Steering Arrangement Grant 3,831,690 - Yamaoka , et al. August 27, 1 | 1974-08-27 |
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