Granted Patent
Utility
US 4,540,321 · App. 06/188,503
Anti-vibration thread form
Inventor:
Imre Berecz
Patented Case
View Patent ↗
Granted: Sep 10, 1985
Filed: Sep 18, 1980
Inventor
Imre Berecz
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.