CIRCUIT OPERATING DEVICE FOR SWIMMING POOL ALARM SYSTEM
United States Patent 3504145
US Patent References:
Safety device for hydraulic brakes
- - 2717935

Pool safety device
- - 3058101

/3204232.html
- - 3204232


Inventors:
Layher, Francis W.
Publication Date:
03/31/1970
View Patent Images:
Download PDF 3504145 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Francis, Layher W.
Primary Class:
200/84R
Other Classes:
340/624, 200/61.200, 340/573.100
International Classes:
G08B21/08; H01H35/18; G08B21/00; H01H35/18




<- Previous Patent (ARRANGEMENT IN SAFET...)   |   Next Patent (WEAR LIMITING ADJUST...) ->