Back to results
US D403,336 SGranted
Five blade drill bit
AssigneeDresser Industries, Inc.
InventorsRobert W. Arfele, George A. Espiritu, Ed R. Martin, Jr.
Life of this patent
Estimating the term…
Abstract
The abstract isn’t available for this document.
Claims1
The ornamental design for a five blade drill bit, as shown and described.