MARSHALL PATENT HOLDINGS, LLC

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
H04M TELEPHONIC COMMUNICATION 1162

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5790636 Telephone travel card system under the control of its customersSep 01, 94Aug 04, 98[H04M]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6295344 Telephone travel card system under the control of its customersExpiredJul 31, 98Sep 25, 01[H04M]
5068891 Credit control system for long distance telephone servicesExpiredMay 31, 89Nov 26, 91[H04M]

Top Inventors for This Owner

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