Granted Patent
Utility
US 5,811,821 · App. 08/694,690
Single axis vibration reducing system
Inventors:
John D. Alexander, Michael D. Kirk
Patented Case
View Patent ↗
Granted: Sep 22, 1998
Filed: Aug 9, 1996
Inventors
John D. Alexander
Michael D. Kirk
Assignee (at issue)
Park Scientific Instruments
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.