Means for Lowering or Raising Drill Disks or Plows.
Description:
Patent for a means of raising and lowering drill disks on plows to allow the machine to travel and not get tangled in obstructions such as underbrush or rocks.
Date:
February 2, 1909
Creator:
Burks, William Edward
Item Type:
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Patent
Partner:
UNT Libraries Government Documents Department