Portfolio folder

Details Portfolio folder Portfolio folder

1990-11-15

1993-02-23

Holtje, Nelson C.

Travel goods and personal belongings

Umbrella or parasol, walking support

Cane or walking support

D 3 53

Patent

active

D03333841

REFERENCES:
patent: D275624 (1984-09-01), Falk et al.
patent: D278722 (1985-05-01), Becker et al.
patent: D291745 (1987-09-01), Hansen
patent: 1914087 (1933-06-01), Gilmore
patent: 2069255 (1937-02-01), Lifton
patent: 2173200 (1939-09-01), Lifton
patent: 2252783 (1941-08-01), Potts et al.
patent: 2536169 (1951-01-01), Gray
patent: 2674288 (1954-04-01), Laidlaw
patent: 3489194 (1970-01-01), Hoover
patent: 3862876 (1975-01-01), Graves
patent: 4685570 (1987-08-01), Medow
Luggage and Travelware May 1977, vol. 160, Proftfolio by the American Portfolio Co. p. 31.

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