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Inventor: David J. Hildebrandt

Address: P.O. Box 620475, Woodside, CA 94062
No. of patents: 1
Last patent issue date: 08/15/2000

Number	Title	Issue Date
6102641	Hole plug A hole plug and method of installing the hole plug to seal and repair a hole in a wall of a pipeline, tank or other physical structure is provided. The hole plug has a bolt with a bolt head and a threaded shank, where two or more adjacent notched washers,...	08/15/2000