Granted Patent
Utility
US 6,498,205 · App. 10/036,053
Extrusion of synthetic wood material using thermoplastic material in powder form
Inventor:
Burch E. Zehner
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Dec 27, 2001
Inventor
Burch E. Zehner
Assignee (at issue)
Crane Plastics Company LLC
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.