Filter element

Environmental heating and cooling; fluid handling and sanitary e – Fluid handling or treatment equipment – Treatment

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2301

Patent

active

D04145445

REFERENCES:
patent: D326706 (1992-06-01), Karlsson
patent: D363760 (1995-10-01), Morem et al.
patent: D374476 (1996-10-01), Page et al.
patent: D401306 (1998-11-01), Ward et al.
patent: D402735 (1998-12-01), Kott
patent: 3469707 (1969-09-01), Humbert, Jr. et al.
patent: 4801383 (1989-01-01), Hoffmann et al.
patent: 5082476 (1992-01-01), Kahlbaugh et al.
patent: 5443721 (1995-08-01), Kelada et al.
patent: 5613992 (1997-03-01), Engel
Exhibit A, Photographs of a prior art filter element (2 pages; 4 photographs).

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