Granted Patent
Utility
US 4,914,711 · App. 06/496,235
Integrally molded bearing block assembly
Inventor:
Leon Rubinstein
Patented Case
View Patent ↗
Granted: Apr 3, 1990
Filed: May 19, 1983
Inventor
Leon Rubinstein
Assignee (at issue)
Polaroid 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.