Hello,
Open the drawing, look at it, copy-paste the info into Excel.
I know I am being sarcastic, but the info provided called for it.
Now, seriously, if you know the TextBox's name, just open the drawing, search for your textbox and retrieve the name. If you don't know the name, your best chance is to get all the textboxes in a specific area where they should be (e.g. Creation Date is at 80mm to the left of lower right corner) and check the text in it using some RegEx.
Hope it helps,
Calin