Granted Patent
Utility
US 4,622,048 · App. 06/692,096
Liquid-gas separator
Inventors:
John H. Roberts, James C. Tischer
Patented Case
View Patent ↗
Granted: Nov 11, 1986
Filed: Jan 17, 1985
Inventors
John H. Roberts
James C. Tischer
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.