Space-efficient ergonomic telephony keypad

Details Space-efficient ergonomic telephony keypad Space-efficient ergonomic telephony keypad

2008-04-15

2008-04-15

Kuntz, Curtis (Department: 2614)

Telephonic communications

Terminal

Housing or housing component

C379S433060

Reexamination Certificate

active

07359505

ABSTRACT:
A space-efficient ergonomic telephony keypad is described which comprises three separate groups of four buttons collectively capable of performing twelve distinct electronic switch operations. Each button is formed for tactile operation. Each group has the four buttons positioned about equally around an imaginary central axis. And, each group of four buttons is positionally rotated about 45 degrees relative to the positioning of an adjacent group of four buttons.

REFERENCES:
patent: 5359658 (1994-10-01), Goodson
patent: 6992658 (2006-01-01), Wu et al.
patent: 2003/0121964 (2003-07-01), Crisan
patent: 2003/0161672 (2003-08-01), Roberson
patent: 2003/0235452 (2003-12-01), Kraus et al.

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