H - Electricity – 03 – K
Patent
H - Electricity
03
K
340/175
H03K 17/96 (2006.01)
Patent
CA 1254971
ABSTRACT OF THE DISCLOSURE The keyboard comprises piezoelectric crystal elements arranged between laminates provided with con- ducting strips. A voltage is generated when pressure is applied to the elements. The keyboard is tensionless in its rest state and contains no unwanted air spaces.
514411
Marks & Clerk
Schenk & Co.
LandOfFree
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