发明授权
US3940540A Non-slip built-up roofing 失效
防滑建筑屋面

Non-slip built-up roofing
摘要:
Built-up roofing employing precoated felts are inhibited from slipping by the use of bituminous emulsions to bind the felts. A minor amount of a compatible latex is incorporated into the emulsion to increase the adhesion of the bonded felts.
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