electrostatic machine invented by a Shaker doctor
... that the electrical principles of an electrostatic machine invented by a Shaker doctor in 1810 for medical treatment were later used by Thomas Edison?
... that the electrical principles of an <b id="mwA1c"><a href="./Corbett's_electrostatic_machine" id="mwA1g" rel="mw:WikiLink" title="Corbett's electrostatic machine">electrostatic machine invented by a Shaker doctor</a></b> in 1810 for medical treatment were later used by <a href="./Thomas_Edison" id="mwA1k" rel="mw:WikiLink" title="Thomas Edison">Thomas Edison</a>?