Granted Patent
Utility
US 4,381,163 · App. 06/194,136
Self-locking nut
Inventors:
Erwin C. Witte, William D. Myers
Patented Case
View Patent ↗
Granted: Apr 26, 1983
Filed: Oct 6, 1980
Inventors
Erwin C. Witte
William D. Myers
Assignee (at issue)
Microdot Inc.
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.