D'Oh!: 17 Sounds You Know

Harley-Davidson's attempt to trademark its “Hog Call” V-twin engine sound stalled, but about 300 sounds have made the cut. Mental Floss sounds off on the 17 best-known:

1. The first trademarked sound: NBC’s chimes, the notes G, E, C
2. MGM’s lion’s roar

3. Tetris’ “electronic Russian folkstyle tune”
4. "D'oh!" Fox owns Homer Simpson’s fave expression
5. The yodelled "Yahoo!"
6. No song here: the spoken letters "AT&T"
7. The Doughboy giggle, owned by Pillsbury

Click the link below for the complete list. (More Patent and Trademark Office stories.)