Granted Patent
Utility
US 5,069,995 · App. 07/356,264
Stain elimination in consecutive color toning
Inventor:
Ronald Swidler
Patented Case
View Patent ↗
Granted: Dec 3, 1991
Filed: May 23, 1989
Inventor
Ronald Swidler
Assignee (at issue)
Commtech International Management 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.