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Arc-welding monitor
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Patent number 4,996,409
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Issue date Feb 26, 1991
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Boris E. Paton
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Electric-arc trainer for welders
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Patent number 4,716,273
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Issue date Dec 29, 1987
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Institute Problem Modelirovania V Energetike Akademii Nauk Ukrainskoi SSR
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Boris E. Paton
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Spark trainer for welders
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Patent number 4,689,021
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Issue date Aug 25, 1987
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Institute Problem Modelirovaniya v Energetike an UKR.SSR
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Vsevolod V. Vasiliev
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Welder's trainer
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Patent number 4,680,014
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Issue date Jul 14, 1987
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Institute Problem Modelirovania v Energetike a An USSR
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Boris E. Paton
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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