Albert C. Callens

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Taunton, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Grappling fork attachment system
- Patent number 8,834,090
- Issue date Sep 16, 2014
- Albert C. Callens
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Grappling fork attachment system
- Patent number 8,061,957
- Issue date Nov 22, 2011
- Albert C. Callens
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Loader attachment system
- Patent number 7,513,732
- Issue date Apr 7, 2009
- Albert C. Callens
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING