Hi Paul,
I was hoping you'd be the one to post. The last "x"s represent the ID number assigned by the state. The ID number that contains the 1507 prefix seems to be a standard length in all the reports I've seen so far but I don't know if the number of characters would change if all of a sudden there was a surge in corporations for that day.
After that number there are three blank spaces before the corporation name. At the end of every line containing the above there is a return. I wasn't sure if it was possible to find a prefix and then somehow search to "the end of the line".
Donna