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Anna Lea Gellatly
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Arvada, CO, US
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Patents Grants
last 30 patents
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Patent Grant
Local exchange subscriber line conferencing method
Patent number
6,885,740
Issue date
Apr 26, 2005
Polycom, Inc.
William Paul Ernstrom
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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last 30 patents
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Patent Application
Local exchange subscriber line conferencing method
Publication number
20030026407
Publication date
Feb 6, 2003
William Paul Ernstrom
H04 - ELECTRIC COMMUNICATION TECHNIQUE