Inventor
STELLMAN VERNON T
US13 patents
Patents
13 patentsUS10422107B2Sep 24, 2019
Trenching system with hydraulically adjustable hub
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Trenching system
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Micro-trenching blade
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US9752301B2Sep 5, 2017
Trenching system
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US9695573B2Jul 4, 2017
Trenching system with hydraulically adjustable hub
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US8375605B2Feb 19, 2013
Trenching system
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US8806784B2Aug 19, 2014
Trenching system
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US10435092B2Oct 8, 2019
Track tensioner
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USD640291SJun 21, 2011
Conical cutting element
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US11396734B2Jul 26, 2022
Trenching system with hydraulically adjustable hub
CHARLES MACHINE WORKS2 citations71
USD930713SSep 14, 2021
Vacuum excavator hose handle
CHARLES MACHINE WORKS2 citations70
US10844574B2Nov 24, 2020
Mobile vacuum system
CHARLES MACHINE WORKS4 citations68
USD640292SJun 21, 2011
Micro-trenching blade
CHARLES MACHINE WORKS5 citations60