Patents - Inventor Surname "Hillebrand"
Hillebrand, Louis 1870/03/01 -> 100402 - > 
Hillebrand, Louis 1870/03/01 -> 100403 - > 
Hillebrand, Louis 1878/07/23 -> 206327 - > 
Hillebrand, Louis 1886/08/31 -> 348521 - > 
Hillebrand, Louis 1887/09/27 -> 370622 - > 
5 Patents Listed