Patents - Inventor Surname "Clarke"
Clarke, Henry 1873/02/04 -> 135523 - > 
Clarke, Henry 1873/07/22 -> RE5497 - > 
Clarke, Henry 1876/02/29 -> RE6959 - > 
Clarke, Henry 1876/06/27 -> 179270 - > 
Clarke, Henry 1879/09/30 -> 220124 - > 
Clarke, Henry 1897/02/16 -> 577358 - > 
6 Patents Listed