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Chain Pipe-Wrench.
Patent for certain new and improvements in chain pipe wrenches, including instructions and illustrations.
Date:
December 26, 1899
Creator:
Bohner, Philip Henry
System:
The Portal to Texas History
Production of Chlorinated Hydrocarbons.
Patent for the new and improved production of Chlorinated Hydrocarbons; "[t]his invention relates to the production of dichlorinated hydrocarbons of the ethylene series, and particularly to the production of mixtures of dichlorinated hydrocarbons containing dichlor-ethylene and dichlor-propylene from mixtures of ethylene hydrocarbons containing ethylene and propylene." (lines 13-20)
Date:
December 10, 1915
Creator:
Brooks, Benjamin T. & Smith, Dillon F.
System:
The Portal to Texas History