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Harrow-Cultivator Attachment

Description: Patent for a harrow attachment for cultivators. Illustrations included.
Date: July 30, 1912
Creator: Kovar, William L. & Wlha, William
Partner: UNT Libraries Government Documents Department

Acetylene-Gas Generator.

Description: Patent for certain new an useful improvements in acetylene gas apparatus, including instructions and illustrations.
Date: January 30, 1900
Creator: Ruthenberg, William
Partner: UNT Libraries Government Documents Department
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