Baby-walker

Transportation – Perambulator – invalid chair – or stretcher – Stroller type

Patent

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Details

D21 74, 1212

Patent

active

D03912019

REFERENCES:
patent: D155785 (1949-11-01), Davis
patent: D156390 (1949-12-01), Wenpetren
patent: D247862 (1978-05-01), Nakao et al.
patent: D252829 (1979-09-01), Nakao et al.
patent: D302707 (1989-08-01), Nakao et al.
patent: D307772 (1990-05-01), Takahashi et al.
patent: 2527953 (1950-10-01), Muffley

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