Application Number 00128215 Application Date 2000.12.12 Publication Number 1360124 Publication Date 2002.07.24 Priority Information International Classification E04F17/02 Applicant(s) Name Lin Runquan Address Inventor(s) Name Lin Runquan Patent Agency Code 00000 Patent Agent AbstractA pressure-variable air exhausting duct for building is composed of air exhausting pipeline, exhaustion guide Read more
Archive : air-exhausting
Structure of pressure-varying air-exhausting duct
Application Number 00128214 Application Date 2000.12.12 Publication Number 1360123 Publication Date 2002.07.24 Priority Information International Classification E04F17/02 Applicant(s) Name Lin Runquan Address Inventor(s) Name Lin Runquan Patent Agency Code 00000 Patent Agent AbstractA pressure-variable air exhausting duct common to a building is composed of air exhausting pipeline, Read more