Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Marvin J. Halfen0
David J. Gilbertson0
Harold Peter Lindelof0
Date of Patent
December 12, 2017
0Patent Application Number
143387910
Date Filed
July 23, 2014
0Patent Primary Examiner
Patent abstract
A prong style file fastener, and method of manufacturer, is disclosed which has a protective element to prevent damage to paper documents and personal injury. In one embodiment, the prongs of the fastener are covered with a powder coating which is melted thereon. In the case of the powdercoat covering, the production line uses a cam drive sprocket retractor system to release the line onto a takeup.
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