Title:
Plural switch combination control for entrance light and bell having pneumatic delay means for opening the entrance light switch
United States Patent 3101396


Inventors:
Kennedy, William P.
Application Number:
US85880259A
Publication Date:
08/20/1963
Filing Date:
12/10/1959
Assignee:
Kennedy, William P.
Primary Class:
Other Classes:
200/520, 340/326, 340/330
International Classes:
H01H7/02; H01H13/54
View Patent Images:
US Patent References:
2921162Circuit interrupter1960-01-12
2912685Door bell actuated light1959-11-10
2866862Time delay switch1958-12-30
1942040Dashpot for time lag relays1934-01-02
1059013N/A1913-04-15
Foreign References:
GB697151A1953-09-16