Granted Patent
Utility
US 4,018,364 · App. 05/656,347
Foam dispensing device
Inventor:
Hershel Earl Wright
Patented Case
View Patent ↗
Granted: Apr 19, 1977
Filed: Feb 9, 1976
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.