- Goodyear Tire & Rubber
- British Petroleum Oil
- A T & T
- Reynolds Metal Company
- NASA
- Houston Lighting & Power
- Philip Morris
- Kimberly Clark, Inc.
- Federal Aviation Admin.
- Square D
- Tandy Corporation
- The Clorox Company
- Abbott Laboratories
- AlliedSignal
- Honda of America
- Campbell Soup
- Southwire Company
- Allen-Bradley
- Exxon
- Hitachi Semiconductor
- Babcock & Wilcox
- Procter & Gamble Company
- Toyota Motor Mfg.
- U. S. Coast Guard
- Compaq Computer
- Baltimore Gas & Electric
- Graybar Electric Co.
- LTV Steel Company
- Martin Marietta
- Fluor Daniel, Inc.
- Southwestern Bell Telecom
- CertainTeed Corporation
- University of Maryland
- The Hoover Company
- PPG Industries
- Imperial Sugar
- ServiceMaster Company
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- United States Air Force
- General Mills, Inc.
- University of Texas
- Johnson Controls
- Toshiba International
- 3M Company
- Commonwealth Edison
- Illinois Power
- Ohio Edison Company
- Lever Brothers Company
- Lockheed Martin
- National Semiconductor
- Ingersoll Rand
- Siemens Automation & Energy
- Rockwell International
- Lederle Praxis Biologicals
- Yoplait, USA
- Texaco
- Phillips 66 Company
- Pacific Gas and Electric
- Cleveland Electric Illuminating
- Landis & Gyr
- MagneTek Transformer
- Purdue University
- University of California
- Factory Mutual Engineering
- Nationwide Insurance
- San Francisco Int'l Airport
- Champion International
- Bell Laboratories
- Joslyn Corporation
- Dallas Water Utilities
- Grundfos Pumps
- LORAL
- American Cyanamid
- General Motors Corporation
- Dresser Industries
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