| Pacific Air Balance Inc (Carson, CA)
|
| Pacific Energy Resources (Long Beach, CA)
|
| Parameter Generation & Control (Black Mountain, NC)
|
| Phoenix Power Control Inc (Monroe, WA)
|
| Phytotronics Inc (Earth City, MO)
|
| Plug Power Inc (Anna, OH)
|
| Powertronic Systems Inc (New Orleans, LA)
|
| Pritchett Controls (Beltsville, MD)
|
| Pro Regulator Svc (Belle Chasse, LA)
|
| Pro Systems (Plainfield, CT)
|
| Process Instruments & Valves (Livonia, MI)
|
| Process Solutions Inc (Saint Louis, MO)
|
| Promag Limited (Baton Rouge, LA)
|
| Propulsion Controls Co (Kansas City, MO)
|
| Pro-Tech Engineering (Akron, OH)
|
| Pyrocom Co (Lynnwood, WA)
|
| Qics (Portsmouth, RI)
|
| Radiametrics (Lorain, OH)
|
| Repco Replacement Parts Inc (Fort Worth, TX)
|
| Riley & Assoc Inc (Columbus, OH)
|
| Robert Shaw Controls Co (Long Beach, CA)
|
| Robertshaw Controls Co (Laredo, TX)
|
| Rome Service Inc (Bellevue, NE)
|
| Rotech Engineering (Placentia, CA)
|
| Rovisys Co (Aurora, OH)
|
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