Results for "Inventors"
Paul Renno Heyl (1872-1961)
- Date: 1930 September 9, 1930
- Creator: Underwood & Underwood
Paul Renno Heyl (1872-1961)
Paul Renno Heyl (1872-1961)
Paul Renno Heyl (1872-1961)
Paul Renno Heyl (1872-1961)
Paul Renno Heyl (1872-1961)
Paul Renno Heyl (1872-1961)
![Paul Renno Heyl (1872-1961), Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2008-2038].](https://ids.si.edu/ids/iiif/SIA-SIA2008-2038-000001/full/250,/0/default.jpg "Paul Renno Heyl (1872-1961), Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2008-2038].")
![Paul Renno Heyl (1872-1961), Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2008-2035].](https://ids.si.edu/ids/iiif/SIA-SIA2008-2035-000001/full/250,/0/default.jpg "Paul Renno Heyl (1872-1961), Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2008-2035].")
![Paul Renno Heyl (1872-1961), Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2008-2039].](https://ids.si.edu/ids/iiif/SIA-SIA2008-2039-000001/full/250,/0/default.jpg "Paul Renno Heyl (1872-1961), Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2008-2039].")
![Paul Renno Heyl (1872-1961), Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2008-2037].](https://ids.si.edu/ids/iiif/SIA-SIA2008-2037-000001/full/250,/0/default.jpg "Paul Renno Heyl (1872-1961), Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2008-2037].")
![Paul Renno Heyl (1872-1961), Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2008-2040].](https://ids.si.edu/ids/iiif/SIA-SIA2008-2040-000001/full/250,/0/default.jpg "Paul Renno Heyl (1872-1961), Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2008-2040].")
![Paul Renno Heyl (1872-1961), Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2008-2036].](https://ids.si.edu/ids/iiif/SIA-SIA2008-2036-000001/full/250,/0/default.jpg "Paul Renno Heyl (1872-1961), Smithsonian Institution Archives, SIA Acc. 90-105 [SIA2008-2036].")