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Patents for Richard Johnstone
Patents 31 - 36 of 36
First set of recordsPrevious set of recordsLast set of records
NumberDatePatenteeTitleType
CA-1,197,594Dec. 03, 1985E.E. Kirkham, R. JohnstoneAdaptive control system for machine tool or the likemachine tool controls
CA-1,214,850Dec. 02, 1986R. Johnstone, L.D. Ostby, H. Chung, E.E. KirkhamAutomatic dynamic error compensatormachine tool controls
4,628,441Dec. 09, 1986L.D. Ostby, H. Chung, E.E. Kirkham, R. JohnstoneAutomatic Dynamic Error Compensatormetalworking machine mechanisms
CA-1,220,018Apr. 07, 1987R. JohnstoneMotorized ball nutmetalworking machine mechanisms
4,784,894Nov. 15, 1988E.J. Hummelt, E.E. Kirkham, R. JohnstoneMolded polymer composite
5,066,176Nov. 19, 1991R. JohnstoneProbe for Machine Toolmetalworking machine mechanisms
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