Granted Patent
Utility
US 4,027,789 · App. 05/612,039
Foaming device for high solids content foamable liquids
Inventor:
Clarence A. Dickey
Patented Case
View Patent ↗
Granted: Jun 7, 1977
Filed: Sep 10, 1975
Inventor
Clarence A. Dickey
Assignee (at issue)
Glasrock Products, Inc.
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.