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Donald Marion Keen

AT AT&T: 4 patents #48 of 1,435Top 4%
📍 Indianapolis, IN: #19 of 402 inventorsTop 5%
🗺 Indiana: #56 of 1,942 inventorsTop 3%
Overall (1997): #8,497 of 185,788Top 5%
4
Patents 1997

Issued Patents 1997

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5687227 Telephone with user recorded ringing signal Paul Wesley Cohrs 1997-11-11
5657258 Mobile pen computer having an integrated palm rest Anthony J. Grewe, Harish S. Mangrulkar, David Stowers, Michael P. Zambelli 1997-08-12
5638438 System and method for automatically creating new pages in a touch screen based telephony product having a hierarchical repertory 1997-06-10
5625375 Method and apparatus for a multiple font display 1997-04-29