Bent spine board

Details Bent spine board Bent spine board

1990-11-05

1993-08-10

Chin, Kay H.

Transportation

Perambulator, invalid chair, or stretcher

D24190

Patent

active

D03381773

REFERENCES:
patent: 2141100 (1938-12-01), Warden
patent: 2400426 (1946-05-01), Lipstay
patent: 2715737 (1955-08-01), Sacks
patent: 3403411 (1968-10-01), Steinemann
patent: 3611454 (1970-06-01), Klippel
patent: 3890659 (1975-06-01), Straubs
patent: 4033000 (1977-07-01), Bonifay
patent: 4369982 (1983-01-01), Hein
patent: 4584729 (1986-04-01), Roberts

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