What charge card, developed in 1950, was the first to be accepted nationally in

What charge card, developed in 1950, was the first to be accepted nationally in the US?

View More Related Question

1) Who is the only U.S. President to invent and patent something?

2) Who invented Bifocal Lens?

3) Who invented Gramophone?

4) What invention caused many deaths while testing it?

5) What did cardiologist Dr. Paul Zoll invent in Massachusetts in 1952?