What LEGO clone brand are these with 4-peg studs? I think this was a present in the mid-late 80s. 

Very sophisticated building blocks for top-view apartment-room design. They also had furniture and appliances. Can anyone tell me the brand etc?
They look similar to Arckit, but the "stud" placement is different.
Perhaps you have a picture of an earlier design?

https://www.dezeen.com/2015/05/24/architect-modelling-system-arckit-posh-lego-damien-murtagh/
https://us.arckit.com/