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Patent Drawing of Engine - 39M-Patent - . Public domain image

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Summary

Patent of the 39M

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patents patent drawings us patent office blowback operation danuvia 39 m lever delayed blowback weapon patents inventions
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Date

2016
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USPTO
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Link

http://uspto.gov/
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label_outline Explore Weapon Patents, Us Patent Office, Patent Drawings

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patents patent drawings us patent office blowback operation danuvia 39 m lever delayed blowback weapon patents inventions