Granted Patent
Utility
US 5,587,419 · App. 08/541,745
Method for the manufacture of weatherable, rigid extrusion profiles having improved surface appearance
Inventors:
Dennis L. Lawson, Robert E. Detterman
Patented Case
View Patent ↗
Granted: Dec 24, 1996
Filed: Oct 10, 1995
Inventors
Dennis L. Lawson
Robert E. Detterman
Assignee (at issue)
B. F. Goodrich Company
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.