Licensing your invention is basically a four-Step process:
1. Locate Manufacturers
2. Prepare Marketing Material
3. Submit Marketing Material to Manufacturers
4. Negotiate License
Of course reaching Step 4 depends upon how well you do Steps 1 - 3. You will first want to locate 20 to 100 manufacturers who make products similar to your invention.
You will then want to prepare a professional looking marketing letter and possibly even a professional brochure of your product.
You may even want to start your own product WebSite showing your invention in further detail for the manufacturers that receive your marketing letter.
After you receive some responses from manufacturers, the next step is to negotiate the licensing agreement, which you should hire an experienced attorney for. If you are unable or unwilling to take the time for the four-step process, then you should consider seeking the help of a licensing agent or attorney.