Backpack frame

Details Backpack frame Backpack frame

1987-12-23

1990-10-09

Largen, James R.

Travel goods and personal belongings

Umbrella or parasol, walking support

Cane or walking support

224153

Patent

active

D03110940

REFERENCES:
patent: D224631 (1972-08-01), Morris
patent: D246938 (1978-01-01), Marguart
patent: D250364 (1978-11-01), Byrne
patent: 3648907 (1972-03-01), Romney
patent: 3856191 (1974-12-01), Pohl
patent: 3923217 (1975-12-01), Dean, II et al.
patent: 3938718 (1976-02-01), Madison
patent: 4009809 (1977-01-01), Morris
patent: 4248367 (1981-02-01), Buel
patent: 4286739 (1981-09-01), Silcott et al.
patent: 4369903 (1983-01-01), Wilkes
patent: 4738383 (1988-04-01), Dearborn et al.
patent: 4871101 (1989-10-01), Bunz et al.

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