non-electric heating apparatus in the nature of a vent heater for preventing ice from forming in a sewer vent pipe and furnace vent pipe; non-electric heating apparatus in the nature of a vent pipe heater that prevents ice build-up within the vent pipe; heating apparatus in the nature of a vent pipe heater that uses the heat of vent pipe air and the sun to prevent ice build-up within the vent pipe

'air':67 'apparatus':5,31,51 'build':44,75 'build-up':43,74 'electr':3,29 'form':17 'furnac':24 'heat':4,30,50,63 'heater':12,39,59 'ice':15,42,73 'natur':8,34,54 'non':2,28 'non-electr':1,27 'pipe':22,26,38,49,58,66,80 'prevent':14,41,72 'sewer':20 'sun':70 'use':61 'vent':11,21,25,37,48,57,65,79 'within':46,77

SEWER SKEWER

Owners

Goods & Services