John J. Loud
... that in addition to inventing and patenting the first ballpoint pen, John J. Loud also held a patent for a firecracker cannon?
... that in addition to inventing and patenting the first <a href="./Ballpoint_pen" id="mwCHE" rel="mw:WikiLink" title="Ballpoint pen">ballpoint pen</a>, <b id="mwCHI"><a href="./John_J._Loud" id="mwCHM" rel="mw:WikiLink" title="John J. Loud">John J. Loud</a></b> <i id="mwCHQ">(pictured)</i> also held a patent for a <a href="./Firecracker" id="mwCHU" rel="mw:WikiLink" title="Firecracker">firecracker</a> cannon?