Harley Davidson Fact 1 by Laura Savard | 2018/07/07 | Uncategorized HomeBrand FactsHarley Davidson Fact 1DID YOU KNOW: Harley Davidson attempted to trademark the sound of its revving engine and was denied when other manufactures complained that their engines sounded exactly the same. Harley officially dropped the request in 2000.[addtoany]See More Brand Facts