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Water filter unit

DC
  • US 8,591,736 B2
  • Filed: 09/15/2011
  • Issued: 11/26/2013
  • Est. Priority Date: 09/15/2011
  • Status: Active Grant
First Claim
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1. A filter unit comprising:

  • a body portion having a proximal end and a distal end; and

    an engagement protrusion extending from the proximal end of the body portion, the engagement protrusion having a cross-section with only one axis of symmetry such that a cross-section of the engagement protrusion has a generally egg-shaped configuration, and a laterally extending key member disposed on the body portion.

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