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Patents Grants
last 30 patents
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Patent Grant
Deployable monitoring device having self-righting housing and assoc...
Patent number
7,333,148
Issue date
Feb 19, 2008
Chang Industry, Inc.
Yu-Wen Chang
G08 - SIGNALLING
Information
Patent Grant
Deployable monitoring device having self-righting housing and assoc...
Patent number
7,030,929
Issue date
Apr 18, 2006
Chang Industry, Inc.
Yu-Wen Chang
G08 - SIGNALLING
Information
Patent Grant
Deployable monitoring device having self-righting housing and assoc...
Patent number
6,831,699
Issue date
Dec 14, 2004
Chang Industry, Inc.
Yu-Wen Chang
G08 - SIGNALLING
Patents Applications
last 30 patents
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Patent Application
Deployable monitoring device having self-righting housing and assoc...
Publication number
20050206729
Publication date
Sep 22, 2005
Chang Industry, Inc.
Yu-Wen Chang
H04 - ELECTRIC COMMUNICATION TECHNIQUE