Keyboard for use with one hand having curvilinear and linear row

Details Keyboard for use with one hand having curvilinear and linear row Keyboard for use with one hand having curvilinear and linear row

1989-10-17

1991-10-22

Crowder, Clifford D.

Typewriting machines

Key-board or key lever-actuating mechanism

Key-board arranged according to character location

400489, B41J 510

Patent

active

050590480

ABSTRACT:
A keyboard permitting data entry with only one hand in which the keys are arranged in non-alphabetic order. The keyboard contains at least four vertical columns of keys, at least six horizontal rows of keys, at least 26 data entry keys, at least 11 multiple entry keys, and at least 3 command keys.

REFERENCES:
patent: 3920979 (1975-11-01), Kilby et al.
patent: 3929216 (1975-12-01), Einbinder
patent: 3944042 (1976-03-01), Gremillet
patent: 3967273 (1976-06-01), Knowlton
patent: 3976840 (1976-08-01), Cleveland et al.
patent: 4615629 (1986-10-01), Power
patent: 4846598 (1989-07-01), Livits
patent: 4940346 (1990-07-01), Liljenquist

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