Inventor
RODENBAUGH DAVID R
US2 patents
Patents
2 patentsUS5283080AFeb 1, 1994
Method and apparatus for manufacturing a granule-covered roofing material by modifying a process parameter in response to measured reflected light
OWENS CORNING FIBERGLAS TECH28 citations89
US6777023B2Aug 17, 2004
Method and apparatus for monitoring granule coloration on an asphalt coated sheet
OWENS CORNING FIBERGLAS TECH3 citations58