Office supplies; artists and teachers materials – Credit card – certificate – or stamp
Patent
1988-04-21
1991-01-01
Burke, Wallace R.
Office supplies; artists and teachers materials
Credit card, certificate, or stamp
283901
Patent
active
D03134288
REFERENCES:
patent: D243763 (1977-03-01), Dorr
patent: D290136 (1987-06-01), Ball et al.
patent: 1294535 (1919-02-01), Rich
patent: 3972138 (1976-08-01), Armbruster et al.
patent: 4236332 (1980-12-01), Domo
patent: 4381121 (1983-04-01), Hanley
patent: 4605846 (1986-08-01), Duret et al.
Burke Wallace R.
Drexler Technology Corporation
Schmidt Pamela J.
Schneck Thomas
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