Granted Patent
Utility
US 5,412,312 · App. 07/955,348
Frequency and instantaneous voltage level meter
Inventors:
Matthew M. Crass, Robert D. Braun
Patented Case
View Patent ↗
Granted: May 2, 1995
Filed: Oct 1, 1992
Inventors
Matthew M. Crass
Robert D. Braun
Assignee (at issue)
Snap-on Incorporated
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.