Petrik's name was Boniface Petrik. He held many patents in several countries. Eventually all guns of this style were known as Petrik System guns.

Damon Petrik
http://www.littlegun.be/arme%20francaise/artisans%20p%20q%20r/a%20petrik%20damon%20gb.htm

A Forgeron



Top Savage 2400, the bottom a Valmet 412





Your gun seems to be yet another variation on the same theme....very unique. If there are any other markings, it would be interesting to see them.

Pete