Artifact Details Title IPX Label Catalog Number 102743867 Type Physical object Description Label reads "IPX-21 IDEOGRAPHIX, INC. Sunnyvale, CA 94086". Manufacturer Ideographix, Inc. Identifying Numbers Model number IPX-21 Dimensions overall: 3 in x 4 1/4 in Category Ephemera/other Collection Title Chan H. Yeh collection of Ideographix materials Credit Gift of Chan Yeh Lot Number X6819.2013