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External operating unit for a mobile radio telephone

  • US 7,027,835 B2
  • Filed: 06/25/2001
  • Issued: 04/11/2006
  • Est. Priority Date: 06/21/2000
  • Status: Expired due to Term
First Claim
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1. An operating unit for a mobile radio telephone, comprising:

  • a housing separate from the mobile radio telephone;

    a first set of standardized functions for the mobile radio telephone which includes the functions for setting up a fixed data link and for transmitting an identity attribute of the mobile radio telephone stored in a memory module of the housing;

    a library containing a second set of specialized functions for the mobile radio telephone which can be stored in the memory module of the housing.

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