Ra; Jong O.

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Patents Grantslast 30 patents

Information Patent Grant
Stepless automatic variable transmission
- Patent number 5,415,597
- Issue date May 16, 1995
- Ra; Jong O.
- Jong O. Ra
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Continuously geared automatic transmission with controlling brakes
- Patent number 5,322,488
- Issue date Jun 21, 1994
- Ra; Jong O.
- Jong O. Ra
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...