Granted Patent
Utility
US 4,184,615 · App. 05/786,087
Foam dispensing device
Inventor:
Hershel Earl Wright
Patented Case
View Patent ↗
Granted: Jan 22, 1980
Filed: Apr 11, 1977
Inventor
Hershel Earl Wright
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.