Door blade with carbide insert
The broken line showing of the rotomill and housing are shown for environmental purposes only and form no part of the claimed design.
Claims
An ornamental design for a door blade with carbide insert, as shown and described.
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Type: Grant
Filed: Dec 28, 2017
Date of Patent: Mar 16, 2021
Inventor: Donald G. Peterson (Denver, CO)
Primary Examiner: Mark A Goodwin
Application Number: 29/631,261