Keyboard

Details Keyboard Keyboard

1977-04-20

1978-07-18

Trafton, David L.

Communications: electrical

Audible indication

Percussion-type sound producer

35 17, 128 205R, 340525, 340337, G08C 1100

Patent

active

041018834

ABSTRACT:
A keyboard for a physiological measuring system, comprising a group of location indication buttons which are arranged on an image of, for example, the heart at locations which correspond to feasible measuring positions. Furthermore, there are preferably provided a number of selection buttons, each of which can have a location indication button associated therewith. This is made visible by means of signal lamps which are arranged adjacent each location indication button.

REFERENCES:
patent: 2094134 (1937-09-01), Obergfell
patent: 2361412 (1944-10-01), Paulus et al.
patent: 3056121 (1962-09-01), Jackson
patent: 3123067 (1964-03-01), Clark
patent: 3382588 (1968-05-01), Serrell et al.
patent: 3766908 (1973-10-01), Haynes
patent: 3886539 (1973-05-01), Gould
patent: 3888491 (1975-06-01), Bernard et al.

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