This and the other questions you have asked are difficult to give definite answers to, as I said in my suggetion to your first question, it will be somebody's private abbreviations.
May I suggest that you try looking at Retskrivningsordbogen at
http://retskrivningsordbogen.dk/ro/ro.htm?q= entering the abbreviation without the full stop. In that way you will get the list of words that start with your abbreviation (you can go to the next page in the list by clicking the forward arrow at the top). At least you will then get an idea of which words could have been abbreviated.
In this particular example, Indb. might as well be 'indberettet'.
Good luck with your search!