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Patents for Henry C. Pierle
Patents 1 - 12 of 12
First set of recordsLast set of records
NumberDatePatenteeTitleType
998,088Jul. 18, 1911W.F. Groene, H.C. PierleHob-grinding attachmentcutter grinding machines
1,248,317Nov. 27, 1917W.F. Groene, H.C. PierleMachine-toolmetalworking machines
1,374,109Apr. 05, 1921H.C. PierleChange-of-speed mechanismdrill presses
1,617,606Feb. 15, 1927H.C. PierleMachine Toolmetalworking machines
2,042,123May 26, 1936H.C. PierleLoading and Unloadng of Work in Machine Toolsmetalworking machine mechanisms
2,080,228May 11, 1937H.C. PierleWork Rotating Structure foe Machine Toolsmetalworking machine mechanisms
2,089,421Aug. 10, 1937H.C. PierleTool Holder for Lathesmetalworking machine mechanisms
2,103,298Dec. 28, 1937H.C. PierleMultiple spindle center drive crankshaft lathecrankshaft lathes
2,173,633Sep. 19, 1939H.C. PierleTool Holder for Latheslathe tool holders and tool posts
2,198,090Apr. 23, 1940W.F. Groene, H.C. PierleTaper Attachment for Lathesmetal lathe accessories and attachments
2,320,333May 25, 1943H.C. PierleGun boring toolgunsmith
2,392,186Jan. 01, 1946H.C. PierleWork Handling Mechanismmetalworking machine mechanisms
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