Edwin Spoelstra

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Leighton, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Tunneling apparatus
- Patent number 9,506,344
- Issue date Nov 29, 2016
- Vermeer Manufacturing Company
- Stuart Harrison
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
PUSH REAMER
- Publication number 20150330148
- Publication date Nov 19, 2015
- Vermeer Manufacturing Company
- Jeffrey James UTTER
- E21 - EARTH DRILLING MINING
Information Patent Application
Micro Tunneling Machine
- Publication number 20140151123
- Publication date Jun 5, 2014
- Vermeer Manufacturing Company
- Edwin Spoelstra
- E21 - EARTH DRILLING MINING