Granted Patent
Utility
US 4,329,097 · App. 06/150,155
Adjustable positive means for locking studs and nuts having critical prestress value
Inventors:
Robert D. Steele, Duane E. Doll
Patented Case
View Patent ↗
Granted: May 11, 1982
Filed: May 15, 1980
Inventors
Robert D. Steele
Duane E. Doll
Assignee (at issue)
Allis-Chalmers 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.