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Patent Drawing of Engine - 001 Sundback zipper 1917 patent Public domain image

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Summary

1917 patent of the "separable fastener" (zipper) by Gideon Sundbäck.

Public domain photograph related to motor parts, engines, free to use, no copyright restrictions image - Picryl description

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Date

20/03/1917
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USPTO
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http://uspto.gov/
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public domain

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