Granted Patent
Utility
US 4,448,148 · App. 06/373,876
Post indicating valve assembly indicator
Inventor:
Lorand H. Gain, Jr.
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: May 3, 1982
Inventor
Lorand H. Gain, Jr.
Assignee (at issue)
AMSTED INDUSTRIES INCORPORATED
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.