Maryland inventor.
His letter about balloons was discussed at a meeting of the American Philosophical Society (October 17, 1788). Also designed a steam engine and supported Englehart Cruses’s application to patent it (1790).
Maryland inventor.
His letter about balloons was discussed at a meeting of the American Philosophical Society (October 17, 1788). Also designed a steam engine and supported Englehart Cruses’s application to patent it (1790).