Title
Patents for Rechnitzer CalculatorCatalog Number
102698462Type
Still ImageDescription
Black and white image of two patent applications for Rechnitzer Calculator. Patent Nos. 809,075 and 1,292,513. These images are of themechanisms only with out lable explanations.
Dimensions
overall: 4 in x 5 inCategory
PhotographCredit
Courtesy of Gwen BellLot Number
X7413.2015