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Antileak Composition.
Patent for improvements in antileak composition in order to prevent leaks in liquid holding containers like radiators, boilers, etc.
Date:
July 5, 1921
Creator:
Shrum, Will N.
System:
The Portal to Texas History
Paving Apparatus.
Patent for "a device or apparatus for transmitting the vibrations of a vibrating machine...for the purpose of solidifying the paving by driving out air and water and surplus moisture" (lines 12-18), including illustration.
Date:
July 5, 1921
Creator:
Stubbs, Robert C.
System:
The Portal to Texas History