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Keith Alexander's invention took 15 years and has made $55 million, but he doesn't own it | Stuff.co.nz
![Amazon.com : Springfree Trampoline - 13ft Jumbo Square With Basketball Hoop and Ladder : Springless Trampoline : Sports & Outdoors Amazon.com : Springfree Trampoline - 13ft Jumbo Square With Basketball Hoop and Ladder : Springless Trampoline : Sports & Outdoors](https://m.media-amazon.com/images/I/512pkmkyFML._AC_.jpg)
Amazon.com : Springfree Trampoline - 13ft Jumbo Square With Basketball Hoop and Ladder : Springless Trampoline : Sports & Outdoors
![Inflatable Trampoline in Downtown Square, Alexander Nevsky Moscow Patriarchate Russian Orthodox Church, Zhmerynka, Ukraine Editorial Stock Image - Image of faith, cross: 208285864 Inflatable Trampoline in Downtown Square, Alexander Nevsky Moscow Patriarchate Russian Orthodox Church, Zhmerynka, Ukraine Editorial Stock Image - Image of faith, cross: 208285864](https://thumbs.dreamstime.com/z/inflatable-trampoline-downtown-square-alexander-nevsky-moscow-patriarchate-russian-orthodox-church-zhmerynka-ukraine-background-208285864.jpg)
Inflatable Trampoline in Downtown Square, Alexander Nevsky Moscow Patriarchate Russian Orthodox Church, Zhmerynka, Ukraine Editorial Stock Image - Image of faith, cross: 208285864
Springfree Trampoline - That's Dr. Keith Alexander, inventor of the Springfree Trampoline showing off his awesome moves! Jumping makes us feel super happy inside! But tell us, how does jumping make you
![Russia's silver medallist Alexander Moskalenko performs during the gymnastics trampoline men's event at the Athens 2004 Olympic Games, August 21, 2004. REUTERS/Kimimasa Mayama KM/KC Stock Photo - Alamy Russia's silver medallist Alexander Moskalenko performs during the gymnastics trampoline men's event at the Athens 2004 Olympic Games, August 21, 2004. REUTERS/Kimimasa Mayama KM/KC Stock Photo - Alamy](https://c8.alamy.com/comp/2D4J7G0/russias-silver-medallist-alexander-moskalenko-performs-during-the-gymnastics-trampoline-mens-event-at-the-athens-2004-olympic-games-august-21-2004-reuterskimimasa-mayama-kmkc-2D4J7G0.jpg)
Russia's silver medallist Alexander Moskalenko performs during the gymnastics trampoline men's event at the Athens 2004 Olympic Games, August 21, 2004. REUTERS/Kimimasa Mayama KM/KC Stock Photo - Alamy
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Alexander Moskalenko biography, Alexander Moskalenko achievements, Alexander Moskalenko career stats | edubilla.com
![Keith Alexander's invention took 15 years and has made $55 million, but he doesn't own it | Stuff.co.nz Keith Alexander's invention took 15 years and has made $55 million, but he doesn't own it | Stuff.co.nz](https://resources.stuff.co.nz/content/dam/images/1/n/i/4/c/u/image.related.StuffLandscapeSixteenByNine.1420x800.1ni4ch.png/1513715649304.jpg)