Granted Patent
Utility
US 4,406,571 · App. 06/248,196
Ampoule crusher mechanism
Inventor:
Steven L. Ross
Patented Case
View Patent ↗
Granted: Sep 27, 1983
Filed: Mar 27, 1981
Inventor
Steven L. Ross
Assignee (at issue)
Federal Signal Corporation
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.