Granted Patent
Utility
US 6,258,877 · App. 09/206,223
Method of producing molded products from stripped roofing material
Inventor:
Vic De Zen
Patented Case
View Patent ↗
Granted: Jul 10, 2001
Filed: Dec 7, 1998
Inventor
Vic De Zen
Assignee (at issue)
ROYAL HOLDINGS TECHNOLOGIES CORP
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.