Granted Patent
Utility
US 4,434,890 · App. 06/331,343
Packaging container for sensitive products
Inventors:
Reinhard Sieck, Gerhard Brusewitz
Patented Case
View Patent ↗
Granted: Mar 6, 1984
Filed: Dec 16, 1981
Inventors
Reinhard Sieck
Gerhard Brusewitz
Assignee (at issue)
Dr. Madaus GmbH & Co
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.