Granted Patent
Utility
US 4,577,870 · App. 06/579,311
O-ring seal in channel with fluid pressure equalization means
Inventors:
Daniel G. Scott, Theodore B. Hill
Patented Case
View Patent ↗
Granted: Mar 25, 1986
Filed: Feb 13, 1984
Inventors
Daniel G. Scott
Theodore B. Hill
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.