If you need information on suppliers and manufacturers, use the resources listed on this page. You can also get names of possible competitors for your product.
ThomasNet.com
You can search for companies by the product produced, e.g. pulse oximeters. Often you can also link to the company's catalog and sometimes CAD drawings of their products.
Engineering360
A specialized index to products and materials in the electrical, electronic, mechanical, chemical, and optical markets.
Reference Solutions
Search 14 million U.S. businesses and 135 million U.S. residents for up to date information. The U.S. Business database may be searched by business type, size and geographic location. This source is available through the Columbia Public Library/Daniel Boone Regional Library. You must have a library card from them to access. Many public libraries have subscriptions, so check with your local library.