Coded test tubes

Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition

Reexamination Certificate

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Reexamination Certificate

active

07604778

ABSTRACT:
A specimen holding device including a test tube having a cylindrical body with one end open and the other end closed, a cap securable to the cylindrical body to close the open end, and a content indicator secured to the tube and separate from the cap. The content indicator extends around the tube near the tube open end and has a selected color matching the cap, where the color is indicative of at least one of a test to be performed on the specimen in the tube and a specimen additive in the tube. The indicator may be a raised elastic ring around the tube cylindrical body and abutting the cap when the cap is secured to the cylindrical body. Alternatively, the indicator may be a colored ring fixed to the tube body around the tube adjacent the tube open end, where the cap overlaps with the content indicator when secured to the cylindrical body.

REFERENCES:
patent: 3415627 (1968-12-01), Rait
patent: 4207289 (1980-06-01), Weiss
patent: 2003/0047483 (2003-03-01), Fineberg
patent: 2006/0116270 (2006-06-01), Hatamian et al.

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