Jeffrey Michael Calkins

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Petersburg, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Debris resistant thrust bearing assembly for high speed hydraulic c...
- Patent number 9,683,574
- Issue date Jun 20, 2017
- Energy Recovery, Inc.
- Felix Winkler
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Debris resistant thrust bearing assembly for high speed hydraulic c...
- Patent number 8,834,028
- Issue date Sep 16, 2014
- Energy Recovery, Inc.
- Felix Winkler
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
DEBRIS RESISTANT THRUST BEARING ASSEMBLY FOR HIGH SPEED HYDRAULIC C...
- Publication number 20150043845
- Publication date Feb 12, 2015
- Energy Recovery, Inc.
- Felix Winkler
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
DEBRIS RESISTANT THRUST BEARING ASSEMBLY FOR HIGH SPEED HYDRAULIC C...
- Publication number 20130163900
- Publication date Jun 27, 2013
- Felix Winkler
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...