Šarboh, Snežana (October 18–20, 2006). “Nikola Tesla's Patents” (PDF). Sixth International Symposium Nikola Tesla. p. 6. 2007年10月30日時点のオリジナルよりアーカイブ。2010年10月8日閲覧。 “The investigation also implies that total number of Tesla's patents could be about 300, though it is considered that the number of the Tesla's original patents is final.”
Šarboh, Snežana (October 18–20, 2006). “Nikola Tesla's Patents” (PDF). Sixth International Symposium Nikola Tesla. p. 6. 2007年10月30日時点のオリジナルよりアーカイブ。2010年10月8日閲覧。 “The investigation also implies that total number of Tesla's patents could be about 300, though it is considered that the number of the Tesla's original patents is final.”