Granted Patent
Utility
US 5,221,574 · App. 07/905,954
Biocidal clothes dryer additive for laundered fabrics
Inventors:
Charles E. Branch, Thomas E. Robitaille
Patented Case
View Patent ↗
Granted: Jun 22, 1993
Filed: Jun 29, 1992
Inventors
Charles E. Branch
Thomas E. Robitaille
Assignee (at issue)
Olin Corporation
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.