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Combination Drafting-Instrument.
Patent for a combination drafting-instrument that is "carried about the person and serve as a combined pencil-holder and drafting tool and when used in the latter capacity to serve the functions of a divider, a square, a compass, and a caliper for either inside or outside gaging" (lines 10-15).
Date:
February 20, 1894
Creator:
Deats, George W.
System:
The Portal to Texas History
Plow Frame
Patent for a plow frame "to which may be attached plow bottoms or cultivator beams" (lines 11-12).
Date:
February 20, 1912
Creator:
Brown, Bartley
System:
The Portal to Texas History