US PATENT SUBCLASS 27 / 31
LIFE SIGNALS
Current as of: June, 1999
Click HD for Main Headings
Click for All Classes
DEFINITION
Classification: 27/31
(under the class definition) Alarms or signals used in connection with coffins for indicating life in persons supposed to be dead.
SEE OR SEARCH CLASS
340, Communications: Electrical,
573.1+, for electrical condition-responsive indicating systems automatically responsive to a condition of a human or animal.
