USD169935S - Thermostatic eire alarm switch - Google Patents

Thermostatic eire alarm switch Download PDF

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Publication number
USD169935S
USD169935S US D169935 S USD169935 S US D169935S
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US
United States
Prior art keywords
thermostatic
alarm switch
eire
derby
fire alarm
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Application number
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John H. Derby
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June 30, 1953 J. H. DERBY Des. 169,935
THERMOSTATIC FIRE ALARM SWITCH Filed Jan. 27, 1953 '///////Illllllli \rrmn "Imllllllll W MW ATTORNEY.
Patented June 30, 1953 IHERMOSTATIO FIRE ALA-RM SWITCH John H. Derby, Scarsdale, N. Y.
Application January 27, 1953, Serial No. 23,321
Term of patent 14 years I claim: The ornamental design for a thermostatic fire alarm switch, as shown.
-To all whom it may concern:
Be it known that I, John H. Derby, a citizen of the United States, residing at 155 Garth Road, Scarsdale, State of New York, have invented a new and original ornamental Design for a Thermostatic Fire Alarm Switch, of which the following is a specification, reference being had to the accompanying drawing, forming a part hereof.
Fig. 1 is a bottom plan View of a thermostatic fire alarm switch showing my new design;
Fig. 2 is a side elevational view taken from the right of Fig. 1;
v Fig. 3 is a side elevational view taken from the bottom of Fig. 2.
JOHN H; DERBY.
References Cited in the file of this patent UNITED STATES PATENTS

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