Granted Patent
Utility
US 5,452,613 · App. 08/130,128
Wide range vacuum gauge
Inventors:
Daniel G. Bills, Michael D. Borenstein
Patented Case
View Patent ↗
Granted: Sep 26, 1995
Filed: Oct 4, 1993
Inventors
Daniel G. Bills
Michael D. Borenstein
Assignee (at issue)
Granville-Phillips Company
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.