Eric Matthias

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Spencer, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Variable geometry auger coupler
- Patent number 9,127,513
- Issue date Sep 8, 2015
- Pengo Corporation
- Eric Matthias
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Drilling bucket
- Patent number 8,615,906
- Issue date Dec 31, 2013
- Pengo Corporation
- Eric Matthias
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Auger having interchangeable cutting heads and method of using the...
- Patent number 7,669,673
- Issue date Mar 2, 2010
- Pengo Corporation
- Eric Matthias
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Drilling Bucket
- Publication number 20130269220
- Publication date Oct 17, 2013
- PENGO CORPORATION
- Eric Matthias
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Variable Geometry Auger Coupler
- Publication number 20130101344
- Publication date Apr 25, 2013
- Eric Matthias
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING