Read this tip to make your life smarter, better, faster and wiser. LifeTips is the place to go when you need to know about United States Patent and Trademark Office and other Invention topics.
When on the US patent and Trade office website, key in the phrase, "Tools to help in searching" by patent classification. When you click on the phrase, a listing of all current U.S. classes and subclasses or patents will be displayed. Find the classes and subclasses that most closely match your invention to do a preliminary patent search.