Title
Hexadecimal AdderCatalog Number
X879.88Type
Physical objectDescription
Object consists of a stylus and adder.Date
1965 ca.Manufacturer
International Business Machines Corporation. Field Engineering Division. (IBM)Place Manufactured
U.S.Identifying Numbers
Other number | 2,797,047 | US Patent No. located on back |
Other number | 229-3168 | Printed on upper right corner |