Bruce W. Stelman

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San Jose, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Smart interface technology
- Patent number 7,831,038
- Issue date Nov 9, 2010
- Hello Direct, Inc.
- Bruce W. Stelman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for interfacing telephone apparatus to a digit...
- Patent number 7,031,454
- Issue date Apr 18, 2006
- Hello Direct, Inc.
- Bruce W. Stelman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Handset port interface including DC measurement and transmit path c...
- Patent number 6,683,949
- Issue date Jan 27, 2004
- Hello Direct, Inc.
- Bruce W. Stelman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for interfacing analog telephone apparatus to...
- Patent number 6,343,126
- Issue date Jan 29, 2002
- Hello Direct, Inc.
- Bruce W. Stelman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Smart interface technology
- Patent number 5,937,031
- Issue date Aug 10, 1999
- Hello Direct, Inc.
- Bruce W. Stelman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adaptive telephone handset interface
- Patent number 5,912,964
- Issue date Jun 15, 1999
- Hello Direct, Inc.
- Bruce W. Stelman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Smart interface technology
- Patent number 5,892,823
- Issue date Apr 6, 1999
- Hello Direct, Inc.
- Bruce W. Stelman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE