Granted Patent
Utility
US 4,470,943 · App. 06/510,495
Low friction plastic track and extrusion process
Inventor:
Allen D. Preis
Patented Case
View Patent ↗
Granted: Sep 11, 1984
Filed: Jul 5, 1983
Inventor
Allen D. Preis
Assignee (at issue)
The Mead Corporation
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.