Within hours of President Obama's historic move to restore full diplomatic relations with Cuba, companies in the United States were already developing strategies to introduce their products and services to a market they have not been in for the better part of 50 years — if ever.

"Cuba is a potential market for John Deere products and services," Ken Golden, a spokesman for Deere & Company, a leading maker of farm and construction equipment based in Illinois, said by email.

But while there may be robust opportunities for some companies, especially those selling products or goods that could be viewed as enhancing Cuba's own domestic production or helping to develop its underused resources, other companies could get the cold shoulder.