Transportation – Perambulator – invalid chair – or stretcher – Element or attachment
Patent
1987-11-17
1990-01-23
Burke, Wallace R.
Transportation
Perambulator, invalid chair, or stretcher
Element or attachment
D 6535
Patent
active
D03056295
REFERENCES:
patent: 3054638 (1962-09-01), Johnson et al.
patent: 3709556 (1973-01-01), Allard
patent: 3970344 (1976-07-01), Baumann
patent: 4410158 (1983-10-01), Maffei
patent: 4511157 (1985-04-01), Wilt, Jr.
patent: 4572536 (1986-02-01), Doughty
patent: 4767131 (1988-08-01), Springer et al.
Burke Wallace R.
Vinson Brian N.
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