Catalogued

Vectorcardiogram

Made by

Hubert Mann (1920 concept); Ernest Frank (1956 lead system)

Year

1920-1956

Field

Medicine

Kind

Data display

Room

Change over time — Placed by reading its description, not yet studiedCould also hang in: Values across a surface

17 other forms share this skeleton

Source

Mann 1920, A method of analyzing the electrocardiogram, Archives of Internal Medicine 25

Attribution less certain: contested, or no single inventor recorded

Searches, not citations

archive.orgcommons.wikimedia.orgscholar.google.com