Title:
Burglar alarm
United States Patent 3011163


Inventors:
Britt, Robert M.
Application Number:
US68921157A
Publication Date:
11/28/1961
Filing Date:
10/09/1957
Assignee:
Britt, Robert M.
Primary Class:
Other Classes:
340/546, 340/549, 361/189
International Classes:
G08B13/08
View Patent Images:
US Patent References:
2943308Protective alarm system1960-06-28
2866181Burglar alarm having both visual and audible alarm means1958-12-23
2724823Alarm apparatus for portable containers1955-11-22
2526206Magnetic connection1950-10-17
2057301Combined lock and switch1936-10-13
1965946Alarm device1934-07-10
0492478N/A1893-02-28
Foreign References:
CH114016A1926-03-01
DE716896C1942-01-31
CA579150A1959-07-07