Start at http://www.uspto.gov. Locate PatFT (Patents Full-Text database) and use it to search for U.S. patent 6415444.
You've invented a device that will attach to a fishing reel and display how much line is paid out. Using the 6.5 Step Search Strategy, determine of there is anything like this already patented.
Step 1: Describe your invention. Ask yourself:
Steps 2-4: Find CPC codes using the terms you brainstormed and verify relevance, then ID subgroups.
Steps 5-6: Search for patents in PatFT and identify any patents for similar inventions.
You're a busy college student that likes to do big grocery shopping trips instead of many smaller ones. This means you always have a lot of bags to carry. You have an idea for a device that would make it easier to carry more bags comfortably. You come across the Click & Carry product, which is a lot like your idea. Answer the following questions: