Tent – canopy – umbrella – or cane – Canes – sticks – crutches – and walking aids – Crutches
Patent
1979-03-02
1981-01-20
Bell, J. Karl
Tent, canopy, umbrella, or cane
Canes, sticks, crutches, and walking aids
Crutches
A61H 302
Patent
active
042456592
ABSTRACT:
A crutch assembly including a cross-member adapted to be strapped to a user, and a pair of spaced crutch members attached to the cross-member in such a way as to be free to pivot through a solid angle with respect to the cross-member.
REFERENCES:
patent: 1063846 (1913-06-01), Winthers
patent: 1244928 (1917-10-01), Walters
patent: 2189429 (1940-02-01), Lundquist
patent: 2667917 (1954-02-01), Dustin
patent: 3289685 (1966-12-01), Parker
patent: 4094330 (1978-06-01), Jong
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