Granted Patent
Utility
US 5,599,584 · App. 08/357,031
Microminiature combustible gas sensor and method of fabricating a microminiature combustible gas sensor
Inventor:
Richard E. Champney, Jr.
Patented Case
View Patent ↗
Granted: Feb 4, 1997
Filed: Dec 16, 1994
Inventor
Richard E. Champney, Jr.
Assignee (at issue)
Mine Safety Appliances Company, LLC
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.