Granted Patent
Utility
US 5,193,351 · App. 07/843,250
Refrigerant recovery and purification system
Inventors:
Gregg E. Laukhuf, Walter D. Murray, Todd J. Arend, Gary P. Murray
Patented Case
View Patent ↗
Granted: Mar 16, 1993
Filed: Feb 28, 1992
Inventors
Gregg E. Laukhuf
Walter D. Murray
Todd J. Arend
Gary P. Murray
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.