Inventor
ROY JOSEPH M
US3 patents
Patents
3 patentsUS10257590B2Apr 9, 2019
Enterprise toll-free call routing
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US10630577B2Apr 21, 2020
Subscriberless differentiated routing system and method
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US10524023B2Dec 31, 2019
Enterprise toll-free call routing
LEVEL 3 COMMUNICATIONS LLC0 citations46