Filtering device

Details Filtering device Filtering device

1989-05-03

1990-07-31

Raduazo, Henry E.

Static structures (e.g., buildings)

Viewing port for specific environment

47DIG6, 350312, A01G 924

Patent

active

049441256

ABSTRACT:
A filtering device for use in shutting out a greater portion of the ultraviolet and infrared rays but admitting the passage of visible lights indispensable to the growth of plants and human life, the device including a mixture and a container for holding the mixture, the mixture containing water, a compound dissociable into ferrous salt ions, and at least one of L-ascorbic acid and D-ascorbic acid, the container comprising transparent members disposed face to face with each other, with the mixture confined therebetween.

REFERENCES:
patent: 2439553 (1948-04-01), Winn
patent: 3470049 (1969-09-01), Reusch
patent: 3695681 (1972-10-01), Dockery
patent: 4044519 (1977-08-01), Morin
patent: 4093352 (1978-06-01), Pisar
patent: 4236360 (1980-12-01), Parrier
patent: 4268126 (1981-05-01), Mumford
patent: 4288953 (1981-09-01), Whiteford
patent: 4380994 (1983-04-01), Seemann
patent: 4561221 (1985-12-01), McKee

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