Gregory W. Draper

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Pella, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Earth penetrating apparatus and method employing radar imaging and...
- Patent number 7,607,494
- Issue date Oct 27, 2009
- Vermeer Manufacturing Company
- Kevin L. Alft
- E21 - EARTH DRILLING MINING
Information Patent Grant
Earth penetrating apparatus and method employing radar imaging and...
- Patent number 7,143,844
- Issue date Dec 5, 2006
- Vermeer Manufacturing Company
- Kevin L. Alft
- E21 - EARTH DRILLING MINING
Information Patent Grant
Underground boring machine employing navigation sensor and adjustab...
- Patent number 6,719,069
- Issue date Apr 13, 2004
- Vermeer Manufacturing Company
- Kevin L. Alft
- E21 - EARTH DRILLING MINING
Information Patent Grant
Horizontal directional drilling machine and method employing config...
- Patent number 6,484,818
- Issue date Nov 26, 2002
- Vermeer Manufacturing Company
- Kevin L. Alft
- E21 - EARTH DRILLING MINING
Information Patent Grant
Horizontal directional drilling machine employing inertial navigati...
- Patent number 6,315,062
- Issue date Nov 13, 2001
- Vermeer Manufacturing Company
- Kevin L. Alft
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Earth penetrating apparatus and method employing radar imaging and...
- Publication number 20070240903
- Publication date Oct 18, 2007
- Vermeer Manufacturing Company
- Kevin L. Alft
- E21 - EARTH DRILLING MINING
Information Patent Application
Earth penetrating apparatus and method employing radar imaging and...
- Publication number 20050173153
- Publication date Aug 11, 2005
- Vermeer Manufacturing Company, Pella, IA
- Kevin L. Alft
- E21 - EARTH DRILLING MINING
Information Patent Application
Earth penetrating apparatus and method employing radar imaging and...
- Publication number 20040190374
- Publication date Sep 30, 2004
- Vermeer Manufacturing Company
- Kevin L. Alft
- E21 - EARTH DRILLING MINING
Information Patent Application
Underground boring machine employing navigation sensor and adjustab...
- Publication number 20030111268
- Publication date Jun 19, 2003
- Vermeer Manufacturing Company
- Kevin L. Alft
- E21 - EARTH DRILLING MINING
Information Patent Application
Underground boring machine employing solid-state inertial navigatio...
- Publication number 20020005297
- Publication date Jan 17, 2002
- VERMEER MANUFACTURING COMPANY
- Kevin L. Alft
- E21 - EARTH DRILLING MINING