Granted Patent
Utility
US 4,995,239 · App. 07/519,071
Liquid line service and process device
Inventor:
Michael D. Carey
Patented Case
View Patent ↗
Granted: Feb 26, 1991
Filed: May 4, 1990
Inventor
Michael D. Carey
Assignee (at issue)
American Standard Inc.
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.