For the Inventor, By the Inventor

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Redmond, WA, United States of America

Digital Systems International, Inc.

USPTO Granted Patents = 2

Forward Citations = 268

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5 inventors (with patents filed for the assignee):

Norman J Donaghue, Jr (1 out of 8 patents)

Terry R Dettmann (1 out of 2 patents)

Stanley E Darland (1 out of 1 patent)

4. David C Mullen (1 out of 1 patent)

5. Clinton J Hurd (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 5467391 - Integrated intelligent call blending (1995-11-14),

2. 5101425 - Operations monitoring system (1992-03-31),

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USPTO Data Jan 1 1976 - Jan 6 2026

2 Patents

#159 in Redmond, WA

#2,269 in Washington

#92,695 in US

Redmond, WA, United States of America

Digital Systems International, Inc.

Forward Citations = 268

5 inventors:

Norman J Donaghue, Jr (1 out of 8 patents)

Terry R Dettmann (1 out of 2 patents)

Stanley E Darland (1 out of 1 patent)

4. David C Mullen (1 out of 1 patent)

5. Clinton J Hurd (1 out of 1 patent)

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