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Patents for Harvey M. Allison
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,835,687Dec. 08, 1931H.M. AllisonBacking-Off Mechanism for Grinding Machinesgrinding attachments
1,835,733Dec. 08, 1931H.M. Allison, E.A. WalkerBacking Off Mechanism for Grinding Machinesgrinding attachments
1,854,242Apr. 19, 1932E.A. Walker, H.M. AllisonMachine for Measuring Tapsmeasurement gauges
1,854,244Apr. 19, 1932E.A. Walker, H.M. AllisonMachine for Measuring Two-Fluted Tapsmeasuring tools
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