Granted Patent
Utility
US 4,640,686 · App. 06/832,224
Audible signal autoinjector training device
Inventors:
N. Lawrence Dalling, Linda A. Gordon
Patented Case
View Patent ↗
Granted: Feb 3, 1987
Filed: Feb 24, 1986
Inventors
N. Lawrence Dalling
Linda A. Gordon
Assignee (at issue)
Survival Technology, Inc.
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.