The logo design is loosely based on the no signs of Europe. While Europe had the logo to the upper left, the rest of the world had the logo to the upper right.
Harvey Famous Cartoons sued Columbia Pictures over the use of the emblem, which bears some resemblance to "Fatso", one of the characters in Casper's ghostly trio. The suit was for 50 million, plus the destruction of all Ghostbusters film prints, however it was dropped in 1986. 
The logo was redesigned for the second film to giving it a different identity from the first film. The animated logo seen in the first chapter of the film shows it having both legs, which wasn't quite the same as the design used later in the film which had the ghost not showing it's right leg at all.
The Real GhostbustersEdit
For more info on the Icon Ghost, click here.
During the 1984 election year in America many campaign buttons, shirts, stickers, were made based loosely on the no-ghost logo. Many of them were anti a rival such as Reaganbusters and Fritzbusters.
- ↑ Fangoria #42 (Feb 1985) - page 63
- ↑ Baby-Boom Children and Harvey Comics After the Code: A Neighborhood of Little Girls and Boys by Kathy Merlock Jackson and Mark D. Arnold page 24
- ↑ http://www.law.fsu.edu/journals/landuse/vol131/CORC.HTMl#FNR33
All four screen caps are from animated short "Fright from Wrong" by Paramount Pictures' Famous Studios.