Granted Patent
Utility
US 4,862,832 · App. 07/157,826
Dispenser for the application of active components
Inventors:
Helmut Metzner, Alan Marshall
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Feb 19, 1988
Inventors
Helmut Metzner
Alan Marshall
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.