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Cutting Apparatus for Mowers.

Description: Patent for a cutting blade for cutting tough weeds and stalks that attaches to a standard grass cutting lawnmower.
Date: January 14, 1908
Creator: Needham, Walter Jackson
Partner: UNT Libraries Government Documents Department

Carbid-Feed Valve

Description: Patent for carbid-feed valve for acetylene generators whose improved form allows for balanced feeding whether closed or open.
Date: January 14, 1913
Creator: Ballard, John S.
Partner: UNT Libraries Government Documents Department
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