Granted Patent
Utility
US 4,490,128 · App. 06/512,214
Bearing-mounted plastic wheel
Inventors:
Siegfried Weiss, Gunther Heurich, Werner Kotzab
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Jul 8, 1983
Inventors
Siegfried Weiss
Gunther Heurich
Werner Kotzab
Assignee (at issue)
Fag Kugelfischer Georg Shäfer AG
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.