DDBH INVESTMENTS, LP

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Technologies

Intl Class Technology # of Patents/ App Rank in Class
 
 
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 180
 
 
 
H04Q SELECTING 1107

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6,427,064 Method and apparatus for maintaining a database in a portable communication deviceJan 05, 94Jul 30, 02[H04Q, G08B]

Expired/Abandoned/Withdrawn Patents

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