UNT Libraries Government Documents Department - 4 Matching Results

Search Results

Results: 1 - 4

Excavator and Conveyer.

Description: Patent for an excavator machine designed "to continuously excavate the ground at different elevations, as in ditching or cutting away embankments" (lines 15-18) including illustrations.
Date: January 6, 1914
Creator: Lee, James Milton
Item Type: Refine your search to only Patent

Film Winding Attachment

Description: Patent for film-winding attachment that allows for the exact number of rotations to wind film. This invention seeks to prevent unnecessary damage that excessive winding can do to film.
Date: January 6, 1920
Creator: Mansfield, Clarence H.
Item Type: Refine your search to only Patent
Back to Top of Screen