Granted Patent
Utility
US 4,565,725 · App. 06/585,396
Composite plastic track and method of making
Inventors:
William S. Spamer, Alan D. Preis
Patented Case
View Patent ↗
Granted: Jan 21, 1986
Filed: Mar 2, 1984
Inventors
William S. Spamer
Alan 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.