U.S. federal trademark · Serial No. 78179464 · Reg. No. 2759047
CALIBRATED TEST KITS, CONSISTING PRIMARILY OF CALIBRATED ORIFICE TUBE, CALIBRATION CHART, FAN, MANOMETERS, TUBING, AND DYE, FOR MEASURING THE LEAKAGE AND PERFORMANCE OF HEATING, VENTILATING, AND AIR CONDITIONING DUCTS
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