Asbestos-free, asphalt roofing compositions especially adapted for cold applications

Year	Description
1996	Invention patented by Michael L. Yap, Raymond T. Hyer, and Barton J. Malina on January 18th, 1996. Abstract: Asbestos-free asphalt cold application roofing compositions are made available through the controlled utilization of fly ash.
Source: selected by the editor from original sources.

Invention: Asbestos-free, asphalt roofing compositions especially adapted for cold applications