Stretcher structure used in multiple collapsible umbrella

Details Stretcher structure used in multiple collapsible umbrella Stretcher structure used in multiple collapsible umbrella

1999-04-08

2000-05-16

Zarfas, Louis S.

Travel goods and personal belongings

Umbrella or parasol, walking support

0304

Patent

active

D0424799&

REFERENCES:
patent: 3746024 (1973-07-01), Kida
patent: 5193565 (1993-03-01), Huang
patent: 5235998 (1993-08-01), Liu
patent: 5337770 (1994-08-01), Wang
patent: 5645094 (1997-07-01), Wu
patent: 5865200 (1999-02-01), Kuang et al.

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