Title:
TRANSMISSION LINE TAMPERING ALARM SYSTEM
United States Patent 3466643


Inventors:
Moorefield, Carlton Swain
Application Number:
US3466643DA
Publication Date:
09/09/1969
Filing Date:
03/18/1966
Assignee:
Carlton, Swain Moorefield
Primary Class:
Other Classes:
340/510, 340/527, 340/635, 340/657
International Classes:
G08B29/08; (IPC1-7): G08B21/00
View Patent Images:
US Patent References:
3191048Light sensitive alarm system1965-06-22
3060417Condition responsive network insensitive to electrical leakage1962-10-23
3029420Network for monitoring alarm systems1962-04-10
2217797Fire alarm system1940-10-15
1870181Protective system1932-08-02
1709097Alarm system1929-04-16
1257440N/A1918-02-26