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Attachment for Coffee-Roasters.
Patent for an attachment to a coffee-roaster that assists in separating coffee beans from foreign matter.
Date:
December 25, 1917
Creator:
Liberto, Samuel
System:
The Portal to Texas History
Insulator.
Patent for an insulator for water pipes that conducts away electric current to be utilized elsewhere.
Date:
December 25, 1917
Creator:
Stone, Oscar Otto
System:
The Portal to Texas History