Granted Patent
Utility
US 5,060,503 · App. 07/477,033
Test kit for gas detectors
Inventors:
William P. Spohn, Richard M. Hickox
Patented Case
View Patent ↗
Granted: Oct 29, 1991
Filed: Feb 8, 1990
Inventors
William P. Spohn
Richard M. Hickox
Assignee (at issue)
BACHARACH, 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.