What are patents used for?
Patents are used to prevent others from using your invention. For more information see www.uspto.gov
Jewelry patents have been granted to jewelry manufacturers and artisans since 1850 for protection against copying by competitors. For precious and non precious jewelry there are design and utility patents. Design patents are used to protect the way an article looks, while a utility patent protects the way an article is used and works. Design and utility patents have separate numbering systems and utility patents far outweigh the number of design patents.
The most basic part of radio technology can certainly be attributed to Tesla. Tesla filed for radio patents in 1897 in the United States and Marconi attempted to file for patents in 1900 but received a denial because of Tesla's existing patents. Anyway, Marconi used some 17 patents of Tesla to make his first radio which not as good as the Tesla radio.