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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

Cattle-Guard

Description: Patent for a cattle-guard on railroad tracks.
Date: January 20, 1903
Creator: Richardson, Columbus John
Partner: UNT Libraries Government Documents Department
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