User interface for portable telecommunication devices

Details User interface for portable telecommunication devices User interface for portable telecommunication devices

1996-10-31

1999-05-04

Hong, Harry S.

Telephonic communications

Terminal

Housing or housing component

379428, 379434, 379419, 379142, 379 9317, 455 90, H04M 156, H04M 100, H04M 900

Patent

active

059012226

ABSTRACT:
An ergonomic portable telecommunication device that can be completely operated with a depressable trackball.

REFERENCES:
patent: D355611 (1995-02-01), Hanagata
patent: 5054051 (1991-10-01), Hoff
patent: 5422656 (1995-06-01), Allard et al.
patent: 5436954 (1995-07-01), Nishiyama et al.

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