000 003090000a22001330004500
245 _aCobblestone June 1994
260 _c6/1/1994
650 _aWomen Inventors
650 _aInventions
650 _aPatent
650 _aMargaret E. Knight
651 _xHedy Lamarr
852 _oJ PER
999 _c44120
_d44120