Šarboh, Snežana (October 18–20, 2006). “Nikola Tesla's Patents” (PDF). Sixth International Symposium Nikola Tesla. p. 6. October 30, 2007時点のオリジナルよりアーカイブ。October 8, 2010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. October 30, 2007時点のオリジナルよりアーカイブ。October 8, 2010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.”