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Carbid-Feed Valve
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.
System:
The Portal to Texas History
Cutting Apparatus for Mowers.
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
System:
The Portal to Texas History