Fluid filtration device

Details Fluid filtration device Fluid filtration device

2005-01-04

2005-01-04

Nguyen, Dinh Q. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Slow diffusers

C239S055000, C239S056000

Reexamination Certificate

active

06837444

ABSTRACT:
A fluid filtration device utilizing envelope constructed of a frangible material and forming a closed interior chamber for holding a charge of volatile scented material. A flexible shield encloses the envelope and is permeable in a controlled manner to the volatile scented material once the envelope has been shattered.

REFERENCES:
patent: 3702677 (1972-11-01), Heffington
patent: 4058425 (1977-11-01), Thrun
patent: 4161284 (1979-07-01), Rattan
patent: 4345716 (1982-08-01), Armstrong et al.
patent: 5133458 (1992-07-01), Miller
patent: 6039488 (2000-03-01), Krawczyk et al.

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