Granted Patent
Utility
US 4,236,935 · App. 06/080,053
Method for removing organic acid soil from surfaces
Inventors:
Daniel Schoenholz, Arthur W. Petersen, Marcus A. Northup, Jr.
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: Sep 28, 1979
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.