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Bellows valve
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Patent number 4,201,366
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Issue date May 6, 1980
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Oliver L. Danko
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Fluid filter
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Patent number 4,028,248
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Issue date Jun 7, 1977
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Nupro Company
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Donald J. Murauskas
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Fluid filter
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Patent number 4,028,254
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Issue date Jun 7, 1977
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Nupro Company
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Earl D. Shufflebarger
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Fluid strainer element
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Patent number 4,018,686
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Issue date Apr 19, 1977
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Nupro Company
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Earl D. Shufflebarger
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL