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David P. Maher
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Windham, NH, US
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last 30 patents
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Patent Grant
Method and apparatus using digital credentials and other electronic...
Patent number
7,577,609
Issue date
Aug 18, 2009
AT&T Intellectual Property II, L.P.
David P. Maher
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus using digital credentials and other electronic...
Patent number
7,043,441
Issue date
May 9, 2006
AT&T Corp.
David P. Maher
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for defining private currencies
Patent number
6,339,765
Issue date
Jan 15, 2002
AT&T Corp.
David P. Maher
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus using digital credentials and other electronic...
Patent number
6,125,349
Issue date
Sep 26, 2000
AT&T Corp.
David P. Maher
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Key management scheme for use with electronic cards
Patent number
5,513,261
Issue date
Apr 30, 1996
AT&T Corp.
David P. Maher
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Secure telecommunications
Patent number
5,455,861
Issue date
Oct 3, 1995
AT&T Corp.
David W. Faucher
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secure communication method and apparatus
Patent number
5,450,493
Issue date
Sep 12, 1995
AT&T Corp.
David P. Maher
H04 - ELECTRIC COMMUNICATION TECHNIQUE