Granted Patent
Utility
US 5,030,375 · App. 07/445,561
Powder-coated laundry detergent sheet
Inventors:
Wayne C. Sigl, Frank C. Murray
Patented Case
View Patent ↗
Granted: Jul 9, 1991
Filed: Dec 5, 1989
Inventors
Wayne C. Sigl
Frank C. Murray
Assignee (at issue)
Kimberly-Clark 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.