To permit visual monitoring of the owner of a data carrier in the form of a wrist-watch, a photo of the owner is incorporated in the clasp attached to the strap of the data carrier.
申请公布号
US5259540(A)
申请公布日期
1993.11.09
申请号
US19920915786
申请日期
1992.07.16
申请人
SKIDATA COMPUTER GESELLSCHAFT M.B.H.
发明人
KOCZNAR, WOLFRAM;WALLERSTORFER, KURT;KISKA, GERHARD
