Transportation – Perambulator – invalid chair – or stretcher – Walker
Patent
1997-07-01
1998-09-29
Spear, Robert M.
Transportation
Perambulator, invalid chair, or stretcher
Walker
1215
Patent
active
D03988856
REFERENCES:
patent: D49947 (1916-11-01), Bogan
patent: D350512 (1994-09-01), Covert et at.
patent: D385833 (1997-11-01), Ratliff, Jr.
patent: D388029 (1997-12-01), Ratliff, Jr.
Lewandowski T. P.
Spear Robert M.
The Goodyear Tire & Rubber Company
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