Re-ranked by oldest: 1. Innovex Year founded: 1961 2. Duffy & Shanley Inc. Year founded: 1973 3. Dodge Associates Inc. Year founded: 1980 FOOTNOTE: 1. Previously listed as Paradigm Media Consultants Inc. Want to join? For more information about participating in PBN’s Top Lists, or to make additions or corrections, call (401) 680-4838 or write…
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