METHOD AND APPARATUS FOR FORMING THE SUBSEQUENT ATTACHMENTS OF EXISTING AND OPERATING CANAL DUCTS
LASZLO,MOZES,HU, LIGETI,BELA,HU, ODOR,ISTVAN,HU, HAJTO,OEDOEN,HU, KOLOMPAR,PETER,HU, PUSZTAI,LAJOS,HU, LASZLO,MIKLOS,HU, TAKACS,KAROLY,HU, HATVANI,JOZSEF,HU
Year of Publication 29.05.1989
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Year of Publication 29.05.1989
Patent