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All Patents of Type: electrical discharge machining
Patents 1 - 15 of 19
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NumberDatePatenteeTitleType
416,873Dec. 10, 1889B.C. TilghmanCutting Metals by Electricityelectrical discharge machining
455,186Jun. 30, 1891A.S. ElmoreApparatus for Loosening Tubes From Mandrelselectrical discharge machining
501,547Jul. 18, 1893E. ThomsonShaping and Spinning Metals by Electricityelectrical discharge machining
2,773,968Dec. 11, 1956J.W. Evans, M.E. MartellottiElectro Discharge Machineelectrical discharge machining
2,778,925Jan. 22, 1957H. Gill, J.G. GrossElectrical Discharge Cutting Machineelectrical discharge machining
2,807,706Sep. 24, 1957J.J. OezerApparatus for Automatic Control of Electrical Discharge Machineelectrical discharge machining
3,168,638Feb. 02, 1965M.J. RiddlesMethod of Electro-Discharge Machining and Fluids for Use Therinelectrical discharge machining
3,170,735Feb. 23, 1965H.H. CoffinInsulated die settool and die maker
3,195,374Jul. 20, 1965H.H. CoffinMethod of making an electrically insulated jointtool and die maker
3,206,639Sep. 14, 1965R.L. HenryElectrical Discharge Machining Apparatuselectrical discharge machining
3,286,127Nov. 15, 1966R.L. HenryElectric Discharge Machining Apparatus with Current Control Meanselectrical discharge machining
3,334,210Aug. 01, 1967M.J. Riddles, J.L. WilliamsElectro-Discharge Machining Fluid and Methodelectrical discharge machining
3,443,153May 06, 1969P.E. BerghausenE. D. M. Power Supply with Current Adjusting Circuitry Responsive to Gap Conditionelectrical discharge machining
3,463,896Aug. 26, 1969R.L. HenryElectro-Discharge Machining Apparatuselectrical discharge machining
3,474,216Oct. 21, 1969J.M. Morgan, Jr.Process Efficiency Detecting Circuit for Electrical Discharge Machining Apparatuselectrical discharge machining
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