Granted Patent
Utility
US 4,882,956 · App. 06/641,480
Emergency Hammer
Inventor:
Manfred Lang
Patented Case
View Patent ↗
Granted: Nov 28, 1989
Filed: Aug 16, 1984
Inventor
Manfred Lang
Assignee (at issue)
Gebr. Happich 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.