专利名称：KEYBOARD SWITCH发明人：DAVID PAUL CHANDLER申请号：AU7956782申请日：19820115公开号：AU7956782A公开日：19820513
摘要：A switch apparatus having first and second surfaces with conductive patternsegments thereon in proximate spaced overlying relation, each of the patterns beinggenerally identical and having a circular array of alternating solid and interleavedconductive portion, one pattern being movable toward the other by tilting of a disc forproviding a plurality of discrete signals.
申请人：MATTEL INC.
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