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U.S. Pat. No. 855,279

by fros1y, published

U.S. Pat. No. 855,279 by fros1y Apr 7, 2012

Description

A 3D model of U.S. Pat. No. 985,969 -- cutting edge 1907 hat-holding technology!

"To all whom it may concern: Be it known that I, WILLIAM H. BURDEN, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented new and useful Improvements in Hat-Holding Devices, of which the following is a specification."

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That's the beauty of it -- these patents expired a long time ago!
Why do you Upload Patented Things on a Openscource website?

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Why do you Upload Patented Things on a Openscource website?
That's the beauty of it -- these patents expired a long time ago!
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