Flexible tube having a variable stiffness bellows

The ornamental design for a flexible tube having a variable stiffness bellows, as shown and described.

FIG. 1 is a perspective view of a flexible tube having a variable stiffness bellows showing my new design;

FIG. 2 is a front view thereof, the rear being identical;

FIG. 3 is a side view thereof;

FIG. 4 is another embodiment thereof;

FIG. 5 is a front view thereof, the rear being a mirror image; and,

FIG. 6 is a side view.

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Jun 30 2000		E. I. du Pont de Nemours and Company	(assignment on the face of the patent)
May 02 2001	RENAUD, MICHEL C	E I DU PONT DE NEMOURS AND COMPANY	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	011935	0306	pdf

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