Granted Patent
Utility
US 4,539,876 · App. 06/540,959
Machine tool
Inventors:
Carl J. Myers, Richard O. Ratzel
Patented Case
View Patent ↗
Granted: Sep 10, 1985
Filed: Oct 11, 1983
Inventors
Carl J. Myers
Richard O. Ratzel
Assignee (at issue)
Warner & Swasey
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.