Granted Patent
Utility
US 4,254,021 · App. 06/068,459
Tissue specific protein and process for preparing same
Inventors:
Hans Bohn, Wilhelm Winckler
Patented Case
View Patent ↗
Granted: Mar 3, 1981
Filed: Aug 21, 1979
Inventors
Hans Bohn
Wilhelm Winckler
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.