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Melvin Nguyen
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Pella, IA, US
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last 30 patents
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Patent Grant
Tunneling apparatus including vacuum and method of use
Patent number
8,439,450
Issue date
May 14, 2013
Vermeer Manufacturing Company
Stuart Harrison
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
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Patent Application
CONTROL SYSTEM AND INTERFACE FOR A TUNNELING APPARATUS
Publication number
20130008718
Publication date
Jan 10, 2013
Vermeer Manufacturing Company
Melvin Nguyen
E21 - EARTH DRILLING MINING
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Patent Application
Tunneling Apparatus Including Vacuum and Method of Use
Publication number
20100206635
Publication date
Aug 19, 2010
Stuart Harrison
E21 - EARTH DRILLING MINING