Geo-Jet

1. U.S. Letters Patent No. 4,197,828
Apparatus For Cutting Concrete Columns
Issued: April 15, 1980
Inventor: Verne L. Schellhorn
Serial No.: 905,354
Filed: May 12, 1978

2. U.S. Letters Patent No. 4,604,003
Method And Apparatus For Retensioning Pre-stressed Concrete Members
Issued: August 5,1986
Inventor: Verne L. Schellhorn
Serial No.: 750,047
Filed: June 27, 1985

3. U.S. Letters Patent No. 4,793,740
Drilling System
Issued: December 27, 1988
Inventor: Verne L. Schellhorn
Serial No.: 935,772
Filed: November 28, 1986

4. U.S. Letters Patent No. 4,958,962
Methods Of Modifying The Structural Integrity Of Subterranean Earth Situs
Issued: September 25, 1990
Inventor: Verne L. Schellhorn
Serial No.: 373,351
Filed: June 28, 1989

5. U.S. Letters Patent No. 5,396,964
Apparatus And Method For Processing Soil in a Subterranean Earth Situs
Issued: March 14, 1995
Inventor: Verne L. Schellhorn
Serial No.: 955,581
Filed: October 1, 1992

6. U.S. Letters Patent No. 5,890,844
Single Engine Soil Processing System
Filed: October 8, 1997
Allowed: November 2, 1998
Inventor: Verne L. Schellhorn

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7. US 6,183,166 B1
Method Of Centrifugally Forming A Subterranean Soil-Cement Casing
Issued: Feb 6, 2001
Inventor: Verne L. Schellhorn
Serial No.: 09/283,483
Filed: Apr 1, 1999

8. US 6,241,426 B1
Method For Forming An Interconnected Underground Structure
Issued: Jun 5, 2001
Inventor: Verne L. Schellhorn
Serial No.: 09/318,184
Filed: May 25, 1999

9. US 6,988,856 B2
Large scale soil processing tool, for use with a preformed sacrificial guide
Inventor: Verne L. Schellhorn
Serial No: 60/461,690
Filed Apr. 8, 2003