Magic drinking straw

Details Magic drinking straw Magic drinking straw

1978-03-22

1980-07-08

Pitrelli, John F.

Card, picture, or sign exhibiting

Display device with gas or liquid movement

40439, 239 33, D 7 42, G09F 1900, A47G 2118

Patent

active

042110246

ABSTRACT:
A drinking straw with a hollow box connected to the straw such that a fluid can be drawn through the box and one face of the box can be seen by the user. The viewed face has transparent indicia surrounded by solid black or dark colored material corresponding to the material of the rear plate of the box, hence, the indicia is only visible when a colored fluid such as milk is drawn through the straw and the box.

REFERENCES:
patent: D225486 (1972-12-01), Bart
patent: D240789 (1976-08-01), Frumkin
patent: 2619770 (1952-12-01), Dinhofer
patent: 2689424 (1954-09-01), Clagett
patent: 3256627 (1966-06-01), Adair

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