Concrete building materials, namely, concrete masonry units with an internal flashing system comprised of webs and face shells forming end dams, weep slots, washed gravel, a three dimensional moisture collection cavity and a coating which seals the bottom surface of said cavity

'bottom':38 'build':2 'caviti':31,42 'coat':34 'collect':30 'compris':13 'concret':1,5 'dam':21 'dimension':28 'end':20 'face':17 'flash':11 'form':19 'gravel':25 'intern':10 'masonri':6 'materi':3 'moistur':29 'name':4 'said':41 'seal':36 'shell':18 'slot':23 'surfac':39 'system':12 'three':27 'unit':7 'wash':24 'web':15 'weep':22

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