Dual drive screw head
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The broken lines showing portions of the design in all figures are included for the purpose of illustrating environment and unclaimed features and forms not part of the claimed design.
The long-short segment broken line indicates a boundary line and the area with in the boundary line forms no part of the claimed design.
Claims
The ornamental design for a dual drive screw head, as shown and described.
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Type: Grant
Filed: May 6, 2013
Date of Patent: Apr 14, 2015
Assignee: Magpul Industries Corporation (Louisville, CO)
Inventors: Michael T. Mayberry (Denver, CO), Richard Fitzpatrick (Longmont, CO), Grady Barfoot (Denver, CO), Eric Nakayama (Broomfield, CO)
Primary Examiner: Sheryl Lane
Application Number: 29/454,089