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Graded particle-size retention filter medium for fluid filtration unit with improved edge seal |
John L. Pulek, William Larsen, Clifford L. Schorr, Francis J. Swiatek, Art Artinyan |
2009-09-01 |
| 7178676 |
Graded particle-size retention filter medium for fluid filtration unit with improved edge seal |
John L. Pulek, William Larsen, Clifford L. Schorr, Francis J. Swiatek, Art Artinyan |
2007-02-20 |
| 6939466 |
Graded particle-size retention filter medium for fluid filtration unit with improved edge seal |
John L. Pulek, William Larsen, Clifford L. Schorr, Francis J. Swiatek, Art Artinyan |
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Spiral pleated filter cartridges |
Scott D. Wofsy |
2003-07-29 |
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John L. Pulek, Thomas J. Hamlin, Richard Sale |
2002-05-21 |
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Apparatus for forming spiral pleated filter cartridges |
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| 5882288 |
Apparatus and method for forming spiral pleated filter cartridges |
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1999-03-16 |
