Granted Patent
Utility
US 4,124,257 · App. 05/823,578
Bearing housing
Inventors:
William J. Derner, Ronald P. Spalding
Patented Case
View Patent ↗
Granted: Nov 7, 1978
Filed: Aug 11, 1977
Inventors
William J. Derner
Ronald P. Spalding
Assignee (at issue)
FMC 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.