Although cases like Katzenbach and Heart of Atlanta Motel stretched Congress' power to regulate under the Commerce Clause, United States v. Lopez, 514 U.S. 549 (1995) restricted the Commerce Clause's reach.
Toothbrushes have been around for hundreds of years. In fact, the first known toothbrushes were used about 5,000 years ago and were made of twigs. The Prophet Mohammed introâ¦duced the use of the miswak (toothbrush) to the middle east about 1,300 years ago.
A tongue cleaner on a toothbrush was patented in 1984. The electric toothbrush was patented in 1996. Removable toothbrush head was patented in 1997 Patents Over the years, engineers have created many new, creative ideas to enhance the toothbrush. Here are a few patent products of the toothbrush.