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Technology Stocks : COM21 (CMTO)

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To: pat mudge who wrote (1573)	1/23/2000 9:49:00 PM
From: Mark Laubach	of 2347

Pat, Thanks for the excellent homework. I'm still digesting it. However, your patent information for Com21 is not correct. The search you did comes up with Com21 anywhere in the patent. In one of them, there appears to be a Com21 Limited in Australia, in the other, COM21 is a signal line. Here's the list from the IBM patent server of issues to date: Patent Issued Title US05425027 06/13/1995 Wide area fiber and TV cable fast packet cell network US05421030 05/30/1995 Communications system and method for bi-directional communications between an upstream control facility and downstream user terminals US05550820 08/27/1996 Multiple protocol personal communications network system US05544164 08/06/1996 Method and cell based wide area network alternative access telephone and data system US05642351 06/24/1997 Wide area fiber and TV cable fast packet cell network US05917822 06/29/1999 Method for providing integrated packet services over a shared-media network US05870134 02/09/1999 CATV network and cable modem system having a wireless return path I did the 1999 ones, the rest Paul Baran's.

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