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Patents
Patents Assigned to Brainard-Kilman Drill Company
Patents Assigned to Brainard-Kilman Drill Company
Drill shaft head
Patent number:
D275862
Type:
Grant
Filed:
December 9, 1981
Date of Patent:
October 9, 1984
Assignee:
Brainard-Kilman Drill Company
Inventors:
John N. Kilman, III, Phillip L. Myers