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Patents for Charles H. Ballard
Patents 1 - 4 of 4
First set of recordsLast set of records
17,183Apr. 28, 1857M. MarshallMethod of reversing chisels of mortising-machinesmortising machines
33,631Nov. 05, 1861C.H. BallardImprovement in breech-loading firearmsrifles
63,605Apr. 09, 1867C.H. BallardImprovement in cartridge-ejector for breech-loading firearmsfirearms
126,519May 07, 1872O.R. ChaplinBenchplane with Perforated Solebench planes
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