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Improvement on Corn and Cotton Planters.
Patent for a combined corn and cotton planter.
Date:
June 23, 1874
Creator:
Domschke, Carles
System:
The Portal to Texas History
Sulfuric-Acid Process of Extracting Precious Metals From Solutions
Patent for "new and useful Imporivements in Processes of Recovering Precious Metals from Their Solutions, and which I designate as the 'Sulfuric-Acid Process;' [...] to separate the precious metals from their cyanid solutions in a rapid and thorough matter and to recover the precious metals from solutions thereof." (lines 5-8 & 22-26)
Date:
June 23, 1903
Creator:
Bahn, Gustavus A.
System:
The Portal to Texas History