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CPC
G08B5/20
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Parent Industries
G
PHYSICS
G08
Signaling
G08B
SIGNALLING OR CALLING SYSTEMS ORDER TELEGRAPHS ALARM SYSTEMS
G08B5/00
Visible signalling systems
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G08B5/20
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Patents Grants
last 30 patents
Information
Patent Grant
3406388
Patent number
3,406,388
Issue date
Oct 15, 1968
G08 - SIGNALLING
Patents Applications
last 30 patents
CPC
G08B5/20
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