U.S. federal trademark · Serial No. 73584634 · Reg. No. 1428191
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
MANUALLY 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
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