Marc Serge Maser 80 W Lancaster Avenue 4th Floor Devon, Pennsylvania, 19333 Phone: 610-341-1035 Company: Mccausland Keen & Buckman A Professional Corporation Lawyer Category: Corporate Law Profile Let this business know you found them on Main Line Today's Online Directories. Locations Devon 80 W Lancaster Avenue 4th Floor Devon, Pennsylvania 19333 Claim/Edit Listing