Granted Patent
Utility
US 5,555,757 · App. 08/451,132
Flat die thread roller
Inventors:
Gregory A. Smith, Dale E. Foltz, Robert E. Wisebaker, Robert E. Loy
Patented Case
View Patent ↗
Granted: Sep 17, 1996
Filed: May 25, 1995
Inventors
Gregory A. Smith
Dale E. Foltz
Robert E. Wisebaker
Robert E. Loy
Assignee (at issue)
NATIONAL MACHINE COMPANY
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.