Richard L. Pratt

Follow

Person

Cincinnati, OH, US

People

Patents Grantslast 30 patents

Information Patent Grant
Pump-off control method of pump jack
- Patent number 6,599,095
- Issue date Jul 29, 2003
- Kabushiki Kaisha Yaskawa Denki
- Noriyuki Takada
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Rope steadying control method and apparatus for crane or the like
- Patent number 5,938,052
- Issue date Aug 17, 1999
- Kabushiki Kaisha Yaskawa Denki
- Toshio Miyano
- B66 - HOISTING LIFTING HAULING