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Patents for William C. Robby
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
720,486Feb. 10, 1903W.N. Rumely, W.C. RobbyPneumatic Straw Stackerhay or straw stackers
1,126,288Jan. 26, 1915W.C. Robby, W.N. RumelyInterchangeable Grain Thresher and Hullerthreshers and thrashers
1,177,812Apr. 04, 1916W.C. Robby, W.N. RumelyInterchangeable Grain Thresher and Hullerthreshers and thrashers
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