U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

A self contained protective enclosure with an opening for entry and egress and a screen for ventilation and viewing.

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Inventor: Chong-Kim Foo

Address: Wavre, BE
No. of patents: 1
Last patent issue date: 12/23/1997

Number	Title	Issue Date
5700304	Filter with protective shield A filter element is provided. The filter element generally includes a first liner, a region of filter media positioned downstream from the first liner and a screen arrangement positioned along a portion of the first liner downstream surface and oriented t...	12/23/1997