Title:
Burglar alarm
United States Patent 3192517


Inventors:
Isadore, Werlin
Application Number:
US19397662A
Publication Date:
06/29/1965
Filing Date:
05/11/1962
Assignee:
BAY STATE SECURITY CORP
Primary Class:
Other Classes:
109/38, 200/61.45M, 200/61.45R, 200/294, 335/285, 340/547, 340/550, 340/566, 340/689
International Classes:
G08B13/00
View Patent Images:
US Patent References:
3056951Safe alarm system1962-10-02
3051934Building protection system1962-08-28
2971186Central warning burglar alarm system1961-02-07
2943308Protective alarm system1960-06-28
2724823Alarm apparatus for portable containers1955-11-22
2422542Electrical alarm system1947-06-17
2279394Closed circuit alarm1942-04-14
2249560Radio alarm system1941-07-15
1920742Protective system1933-08-01
Foreign References:
CA483332A1952-05-20
GB744911A1956-02-15
GB770958A1957-03-27