Sales and advertising equipment – Signs or display forms
Patent
1978-03-13
1980-07-29
Kemper, Catherine E.
Sales and advertising equipment
Signs or display forms
D20 39, D2003
Patent
active
D02561387
REFERENCES:
patent: 2940606 (1960-06-01), Kurnitz
patent: 3975850 (1976-08-01), Giaume
Kemper Catherine E.
Miller Alfred E.
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