CALLMANAGE, LTD.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6078652 Least cost routing systemExpiredDec 18, 97Jun 20, 00[H04M]
5991384 Apparatus for facilitating the making of a calling card telephone callExpiredSep 15, 97Nov 23, 99[H04M]
5862203 Telecommunications call management systemExpiredAug 20, 96Jan 19, 99[H04M]
5799072 Telecommunications call management systemExpiredMar 04, 96Aug 25, 98[H04M]
5764741 Least cost rooting systemExpiredJul 21, 95Jun 09, 98[H04M]

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