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Patents for Charles F. Ritchel
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
100,927Mar. 15, 1870C.F. RitchelImprovement in machines for preparing wood for inlayingcarving machines
121,074Nov. 21, 1871F.S. Allen, C.F. RitchelImprovement in boring-machinesdrilling and boring
344,867Jul. 06, 1886C.F. RitchelPlaning and matching machinematchers
373,536Nov. 22, 1887C.F. RitchelWave-edge matching machinematchers
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