Granted Patent
Utility
US 5,376,147 · App. 08/025,214
Process for dyeing leather with dye mixtures
Inventors:
Campbell Page, Peter Moser, Alois Puntener
Patented Case
View Patent ↗
Granted: Dec 27, 1994
Filed: Feb 26, 1993
Inventors
Campbell Page
Peter Moser
Alois Puntener
Assignee (at issue)
Ciba-Geigy
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.