Granted Patent
Utility
US 5,205,960 · App. 07/677,710
Method of making clear, stable prespotter laundry detergent
Inventors:
Karen K. Kristopeit, Calvin J. Verbrugge
Patented Case
View Patent ↗
Granted: Apr 27, 1993
Filed: Mar 29, 1991
Inventors
Karen K. Kristopeit
Calvin J. Verbrugge
Assignee (at issue)
S. C. JOHNSON & SON, 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.