None of these technologies have made it to the consumer market as an article of commerce, however.
From the scoop.co.nz
He believed that metal was the first indispensable article of commerce, and that metal-smiths were therefore full-time professionals who lived off the social surplus.
From the en.wikipedia.org
Article 1, Section 8 of the United States Constitution grants Congress the power to regulate interstate commerce.
From the infowars.com
Scientific metrology addresses measurement phenomena not quantified in ordinary commerce, such as the test bed pictured at the beginning of the article.