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|Affiliations= | |Affiliations= | ||
|Started=1946 | |Started=1946 | ||
|Wikidata id= | |Wikidata id=Q1738104 | ||
}} was founded by Joseph F. Keithley in Cleveland, OH, in 1946. | }} was founded by Joseph F. Keithley in Cleveland, OH, in 1946. | ||