Granted Patent
Utility
US 5,147,476 · App. 07/669,062
Delay composition and device
Inventors:
Michael Beck, John J. Flanagan
Patented Case
View Patent ↗
Granted: Sep 15, 1992
Filed: Mar 12, 1991
Inventors
Michael Beck
John J. Flanagan
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.