Granted Patent
Utility
US 6,202,433 · App. 09/412,126
Protection system for refrigerant identification detector
Inventors:
Walter D. Murray, William Brown
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Oct 5, 1999
Inventors
Walter D. Murray
William Brown
Assignee (at issue)
SPX Corporation
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.