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Process for Converting Sodium Sulfate to Sodium Sulfid.
Patent for converting sodium sulfate to sodium sulfid, it is a process conversion of chemical compounds sodium sulfate to sodium sulfid.
Date:
November 22, 1921
Creator:
Anderson, Robert James
System:
The Portal to Texas History
Process of Producing Metallic Zinc
Patent for a process of producing metallic zinc. Illustration included.
Date:
November 22, 1910
Creator:
Dawson, Oliver B.
System:
The Portal to Texas History