Granted Patent
Utility
US 4,453,406 · App. 06/331,544
Device for the transport of test specimens in strip form to a measuring apparatus
Inventor:
Wolfgang Spitzer
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Dec 16, 1981
Inventor
Wolfgang Spitzer
Assignee (at issue)
Behringwerke Aktiengesellschaft
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.