Transportation – Perambulator – invalid chair – or stretcher – Walker
Patent
1999-02-05
2000-02-01
Spear, Robert M.
Transportation
Perambulator, invalid chair, or stretcher
Walker
D12140, 1215
Patent
active
D04199243
REFERENCES:
patent: D304816 (1989-11-01), Tatsumi
patent: D307406 (1990-04-01), Tatsumi
patent: D313961 (1991-01-01), Hasegawa
patent: D314170 (1991-01-01), Hasegawa
Dunlop KT985 ATV-Off Road Tire, Jan. 1997 Tread Design Guide, p. 217.
Spear Robert M.
Sumitomo Rubber Industries Ltd.
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