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Patents for Walter H. Hall
Patents 1 - 4 of 4
First set of recordsLast set of records
1,560,782Nov. 10, 1925W.H. HallHeel-shaping machineshoemaking
1,749,938Mar. 11, 1930W.H. HallDouble-cylinder planerwood planers
1,924,189Aug. 29, 1933W.H. HallLubricating device for anti-friction spindle bearingwoodworking machine mechanisms
2,024,640Dec. 17, 1935W.H. HallAutomatic feeding mechanism for variety lathespattern lathes
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