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Ken W. Winterrowd Patents |
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Inventor: Winterrowd; Ken W.
Address: Pearland, TX
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 6715567 |
Apparatus and method for forming a pilot hole in a formation |
April 6, 2004 |
| The present invention generally provides an apparatus and method for forming a pilot hole in a formation. In one aspect of the present invention, the apparatus may comprise a starter mill connected to a bearing mill by a body joint. The apparatus may further comprise a lead bearing c |
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