

What are their names? Hashtag? 'Pound' sign? 'Number' sign? Tic-tac-toe board?
How about the second one? Is is a star? An asterisk? A "bippie" (you have to be a child of the late 60s to get this reference) ? A 'thing-a-ma-jig'?
Turns out we've been wrong all along. Back in 1975, a US patent (#3,829,926) was granted in which these two symbols were named, respectively, the octothorp and the sextile.
(scroll down to page 7, first column, of the .pdf)
So ... a little edumacation for you today. You're welcome.


-"BB"-