Title
The AdderCatalog Number
102682869Type
Physical objectDescription
The Adder machine. Larger front circular plate reads "The Adder C. H. Webb". The smaller circular plate reads "PAT'D NOV. 5th 12th 1889"Date
1891Manufacturer
Webb, C. H.Identifying Numbers
Other number | PAT'D NOV. 5th 12th 1899 | Date patented |