Air treatment device

Details Air treatment device Air treatment device

1974-07-23

1976-01-06

Richman, Barry S.

21 53, 21 74R, 98 30, 98109, A61L 904, F24F 312, A61L 300, F24F 1316

Patent

active

039307972

ABSTRACT:
A container is mounted in an air duct, the container having an open top and adjustable opening means on the opposite side. An air dispersible substance is placed in the container and is released into the air stream of the duct according to the degree of opening of the opening means.

REFERENCES:
patent: 234369 (1880-11-01), Bucher
patent: 2460335 (1949-02-01), Bass
patent: 2867866 (1959-01-01), Steele
patent: 3290112 (1966-12-01), Gillenwater et al.
patent: 3419217 (1968-12-01), White et al.
patent: 3474598 (1969-10-01), Keuls
patent: 3576593 (1971-04-01), Cicirello
patent: 3661323 (1972-05-01), Farris
patent: 3694146 (1972-09-01), Roy et al.
patent: 3820308 (1974-06-01), Onuki

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