Granted Patent
Utility
US 4,574,337 · App. 06/579,134
Underwater lights
Inventor:
Charles B. Poppenheimer
Patented Case
View Patent ↗
Granted: Mar 4, 1986
Filed: Feb 10, 1984
Inventor
Charles B. Poppenheimer
Assignee (at issue)
GTY Industries
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.