DALLAS — A Texas inventor who designed an air guitar and trumpet in the 1930s is now facing felony charges for allegedly violating state anti-trust laws.
Inventor Michael Grosz, a retired oilman who invented the air guitar in 1930, is accused of violating a law that bars monopolies from controlling and discriminating against a competitor’s products.
The complaint against Groszo was filed Wednesday in the U.S. District Court for the Northern District of Texas.
The lawsuit filed by the Texas Bar Association accuses Groszy of illegally controlling and unfairly pricing his products and products on the market.
It says Groszz’s company, Davis Instruments, a manufacturer of electric and acoustic instruments, was also a competitor.
Davis Instruments is also a maker of air guitar accessories, Groszel’s attorney, Richard Kastner, said.
The Texas Bar is handling the case.
Grosz was arrested in February and is facing two counts of conspiracy to commit monopolistic interference and one count of violating the Texas Consumer Fraud and Abuse Act.
He was arraigned on the charges on Wednesday.
The company was founded in 1931 by Grosza, who worked at the Texas oil company Shell Corp. Grosze died in 2005.
Davids Instruments manufactures the Davis, an electric guitar and acoustic trumpet.
The company has been a maker since 1937 and is owned by Grazz’s wife, Lola.