Title:
Alarm device for indicating lack of motion
United States Patent 3163856
Inventors:
Kirby, Frederick G.
Publication Date:
12/29/1964
Export Citation:
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Assignee:
Kirby, Frederick G.
Primary Class:
340/526
Other Classes:
128/903, 200/61.45R, 340/539.1, 340/539.12, 340/573.1, 455/100, 600/595
International Classes:
G08B21/04; H01H35/00; G08B21/00; H01H35/00
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US Patent References:
3082414Sleep inhibiting device and method
3056951Safe alarm system
2875430Alarm apparatus for motor vehicle operator
2726380Sleep warning device
2473922N/A
2351229Tape feed alarm
2193945Apparatus for measuring and supervising the heart action
0884121N/A
Foreign References:
GB810730A