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Summary

Telharmonium patent US580035A page 3 of 55 by Thaddeus Cahill, filed 1895-02-04, patented 1897-04-06

Source: https://patents.google.com/patent/US580035A

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Date

1897
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Source

USPTO
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Link

http://uspto.gov/
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Copyright info

public domain

label_outline Explore Us 580035 A Thaddeus Cahill Telharmonium Patent, Us Patent Office, Patents

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