Patent Information
Patent Number: US2297691 A
Patent Title: Electrophotography
Publication date: Oct 6, 1942
Filing date: Apr 4, 1939
Priority date: Apr 4, 1939
Inventors: Chester F Carlson
Patent Information
Patent Number: US2297691 A
Patent Title: Electrophotography
Publication date: Oct 6, 1942
Filing date: Apr 4, 1939
Priority date: Apr 4, 1939
Inventors: Chester F Carlson