| Linde Hydraulics Corp (Minneapolis, MN)
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| Lmi-Liquid Metronics Inc (Madison, WI)
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| Lotus Engineering Inc (Ann Arbor, MI)
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| Madden Manufacturing Inc (Elkhart, IN)
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| Mandus Group Ltd (Davenport, IA)
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| Mc Carthy Well Co (Shakopee, MN)
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| Mervin W Cornell & Sons Well (Perry, MI)
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| Met-Pro Corp Dean Pump Div (Indianapolis, IN)
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| Michigan Sure Pump (Three Oaks, MI)
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| Midwest Pump & Meter Co Inc (Saint Louis, MO)
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| Minnesota Wanner Co (Minneapolis, MN)
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| Neumayer Equipment Co (Jefferson City, MO)
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| Ohio Transmission & Pump Co (Terre Haute, IN)
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| Oil-Air Products Inc (Hamel, MN)
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| Pertzborn Pumps (Dane, WI)
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| Pneumatic Motor Inc (Minneapolis, MN)
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| Portaco Inc (Moorhead, MN)
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| Ppi Durequip Inc (Minneapolis, MN)
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| Psi Engineering (Mankato, MN)
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| Pump Engineering Inc (Monroe, MI)
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| Pump Shop (Saint Louis, MO)
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| Pumpworks Inc (Minneapolis, MN)
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| Qed Environmental Systems (Ann Arbor, MI)
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| R L Deppmann Co (Southfield, MI)
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| R W Mercer Co (Grand Rapids, MI)
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