A flexible insert has two flanges between which membrane made of elastic air impermeable material is fixed. The flanges are arranged with different dimensions.
申请公布号
UA50252(U)
申请公布日期
2010.05.25
申请号
UA20090013714U
申请日期
2009.12.28
申请人
"LVIVSKA POLITEKHNIKA" NATIONAL UNIVERSITY
发明人
ZHUKOVSKYI STEFAN SEMENOVYCH;HULAI BOHDAN IVANOVYCH
