Assignee
CALIFORNIA INTERFACE SOFTWARE
US·3 granted patents·23 citations·filing 1981–1982
Top patents by PatentIndex Score
3 records- 0140US4451068AEngraved image identification card with opaque cover layerCALIFORNIA INTERFACE SOFTWARE·Filed 1981·Granted May 29, 1984·9 cites·7 claims
- 0238US4420174AIdentification card bearing latent image perceptible in the presence of background lightCALIFORNIA INTERFACE SOFTWARE·Filed 1981·Granted Dec 13, 1983·7 cites·12 claims
- 0336US4415612ADouble engraved identification cardCALIFORNIA INTERFACE SOFTWARE·Filed 1982·Granted Nov 15, 1983·7 cites·12 claims
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