Alarm screen with built-in battery operated sounding unit
A Standard patent application filed on 07 March 1997 credited to Stepp, Merle L.
;
Zahn, Richard A. Jr.
Details
Application number :
20676
Application type :
Standard
Application status :
LAPSED
Under opposition :
No
Proceeding type :
Invention title :
Alarm screen with built-in battery operated sounding unit