Granted Patent
Utility
US 5,081,772 · App. 07/524,469
Condensation vapor degreaser
Inventor:
Donald P. Wyman
Patented Case
View Patent ↗
Granted: Jan 21, 1992
Filed: May 17, 1990
Inventor
Donald P. Wyman
Assignee (at issue)
Rochester Midland 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.