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Petroleum Laws of All America
Report issued by the Bureau of Mines covering petroleum laws of the U.S. and surrounding oil producing countries. As stated in the preface, "this bulletin includes the petroleum laws of (1) United States; (2) the several oil-producing States; (3) Canada; (4) Mexico; (5) the Republics of Central and South America" (p. iv).
Date:
March 1921
Creator:
Thompson, Joseph Wesley
Object Type:
Report
System:
The UNT Digital Library
Filtering Material.
Patent for "improved filtering stuff composition" (lines 8-9), containing vegetable ashes and an insoluble binding agent for the purpose of purifying liquids.
Date:
April 19, 1921
Creator:
Müller, Enrique
Object Type:
Patent
System:
The Portal to Texas History