GR

Gerhard Ritzerfeld

Overall (1982): #63,034 of 81,411Top 80%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4354757 Xerographic or electrostatic copying apparatus capable of copying only selected lines, paragraphs or other such sections of an original 1982-10-19