Sales and advertising equipment – Signs or display forms
Patent
1978-02-22
1980-07-22
Kemper, Catherine E.
Sales and advertising equipment
Signs or display forms
D2003
Patent
active
D02560321
REFERENCES:
patent: D189517 (1961-01-01), Van Den Berg
patent: D252402 (1979-07-01), Kutschmende
patent: 1453731 (1923-05-01), Stephenson
patent: 2814141 (1957-11-01), Friedman
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