Granted Patent
Utility
US 4,876,868 · App. 07/301,808
Method for forming an object of metal by cold pressing
Inventors:
Hans-Joachim Tushaus, Michael Hormann
Patented Case
View Patent ↗
Granted: Oct 31, 1989
Filed: Jan 25, 1989
Inventors
Hans-Joachim Tushaus
Michael Hormann
Assignee (at issue)
W. C. Heraeus GmbH
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.