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Process of Making Aluminum Chlorid.

Description: Patent for the process of making aluminum chlorid (chloride) wherein solid materials are preheated to alleviate heating supply issues during the process.
Date: May 28, 1918
Creator: King, George H. & Roberts, Gerald I.

Train-Pipe Coupling.

Description: Patent for a train pipe coupling that holds tightly together.
Date: March 28, 1911
Creator: Moss, Dexter W. & Olschner, Clarence E.
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