Granted Patent
Utility
US 4,500,451 · App. 06/524,201
New protein PP.sub.13 extracted from human placental tissues and use thereof
Inventors:
Hans Bohn, Walter Kraus
Patented Case
View Patent ↗
Granted: Feb 19, 1985
Filed: Aug 18, 1983
Inventors
Hans Bohn
Walter Kraus
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.