Source: https://archive.orgAmerican Trademark Designs, Dover Publications, 1976. License: All Rights Reserved.
Ditto Inc, founded in 1910 and later a division of Bell & Howell, Inc., manufactured duplication equipment, such as spirit duplicators. Ditto machines became so popular in American offices and schools it became a generic noun/verb — one would “ditto” something to make a copy.
This 1958 redesign of the Ditto logo, using Bulletin Typewriter almost directly, is credited in Barbara Baer Capitman’s American Trademark Designs, (Dover, 1976) to Morton Goldsholl of Morton Goldholl Associates (though this book often attributes work to firm owners rather than specific designers). The straight double-quotes ("), as seen on a typewriter and common shorthand for repetition, were used in the logo and as a pattern motif for packaging.