73584634
Feb 25, 1986
Feb 10, 1987
AUTOMATICALLY ACTIVATED GUILLOTINE DAMPERS THAT HAVE A SEALING MECHANISM FOR A SLIDING DAMPER PLATE AND ARE USED INDUSTRIALLY TO CONTROL GAS FLOW IN A DUCT, AND PARTS THEREFOR
Electrical and Scientific ApparatusMANUALLY OPERATED GUILLOTINE DAMPERS THAT HAVE A SEALING MECHANISM FOR A SLIDING DAMPER PLATE AND ARE USED INDUSTRIALLY TO CONTROL GAS FLOW IN A DUCT, AND PARTS THEREFOR
Environmental Control Apparatus