Name/Title
Blood Cell CalculatorEntry/Object ID
1000.22.402Description
Calculator, Blood CellCollection
Frank LivermoreMade/Created
Manufacturer
Marbel Blood Calculator Co.Notes
possible date made: Patented 1922
where made: Chicago, IL
model number: VI-T
serial number: 5001General Notes
Note
Eight keys, 6 digit readout, calculates percent.
Patent 1,418,384
5 blood types registered by pressing one of the 5 buttons.