Granted Patent
Utility
US 4,520,157 · App. 06/452,264
Early warning fire-detection paint
Inventors:
Lymperios N. Yannopoulos, Robert D. Straw, D. Colin Philips
Patented Case
View Patent ↗
Granted: May 28, 1985
Filed: Dec 22, 1982
Inventors
Lymperios N. Yannopoulos
Robert D. Straw
D. Colin Philips
Assignee (at issue)
Westinghouse Electric Company LLC
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.