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Patents Granted on 1990-05-??
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
4,920,723May 01, 1990D.R. PorterHollow Granite Box Beam and Method of Formingmanufacturing processes
4,922,574May 08, 1990J.A. Parise, G.R. Slivon, C.H. HeiligenthalCaster Locking Mechanism and Carriage
4,924,737May 15, 1990S.A. GommowPositive Drive Ratchetratchet wrenches
4,926,556May 22, 1990R. Landy, A. Carsello, E.A. PilatowiczHand held trimmer for cutting vegetation such as hedges and the like
4,926,557May 22, 1990E.J. HauptSemi-automatic string trimmer head
4,928,937May 29, 1990L.M. BernsteinMulti-purpose machine visemetalworking machine vises
4,929,082May 29, 1990G.B. WebberLaser Linear Distance Measurement System and Apparatusoptical measuring gauges
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