Granted Patent
Utility
US 4,974,115 · App. 07/265,789
Ionization system
Inventors:
Albert C. Breidegam, C. James Corris, Frank J. McCarty
Patented Case
View Patent ↗
Granted: Nov 27, 1990
Filed: Nov 1, 1988
Inventors
Albert C. Breidegam
C. James Corris
Frank J. McCarty
Assignee (at issue)
Semtronics
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.