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Test marketing. Coupon sampling. Copy research. All are standard practices in today's world of advertising. All were invented by Claude C. Hopkins (1866-1932), who worked for various advertisers including Bissell Carpet Sweeper Company, Swift & Company and Dr. Shoop's patent med…
Test marketing. Coupon sampling. Copy research. All are standard practices in today's world of advertising. All were invented by Claude C. Hopkins (1866-1932), who worked for various advertisers including Bissell Carpet Sweeper Company, Swift & Company and Dr. Shoop's patent med…