UNT Libraries Government Documents Department - 3 Matching Results

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Oil Pump

Description: Patent for an oil pump that may be attached to a barrel or container and dispense liquid in predetermined quantities.
Date: May 31, 1921
Creator: Hughes, Stanley R.
Item Type: Refine your search to only Patent

Puzzle.

Description: Patent for a puzzle made of interlocking blocks that are attached by a cord through holes in the blocks, that, when fully assembled, forms the shape of a Chinese cross.
Date: August 23, 1921
Creator: Hime, Clint T.
Item Type: Refine your search to only Patent
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