Granted Patent
Utility
US 4,193,886 · App. 05/679,333
Novel low temperature cleaner
Inventors:
Daniel Schoenholz, Arthur W. Petersen, Marcus A. Northup, Jr.
Patented Case
View Patent ↗
Granted: Mar 18, 1980
Filed: Apr 22, 1976
Inventors
Daniel Schoenholz
Arthur W. Petersen
Marcus A. Northup, Jr.
Assignee (at issue)
Church & Dwight Co., 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.