| ROUND TIGHT Ampco-Pittsburgh Corporation
73399672 07 Oct 1982 | on 21 Feb 1991 | Metal Boot Plates, Pans and Couplings Used in Pile Driving and as Foot... Class 006 Metal Boot Plates, Pans and Couplings Used in Pile Driving and as Footings in the Building and Construction Industries | | | A Ampco-Pittsburgh Corporation
81013388 31 Dec 1969 | on 10 Nov 1981 | | | | EXPANDO Ampco-Pittsburgh Corporation
73180916 03 Aug 1978 | on 14 Oct 1981 | Expandable Metal Pans to Receive and Seal the Lower Ends of Pipe Pilin... Class 006 Expandable Metal Pans to Receive and Seal the Lower Ends of Pipe Piling and for Expandable Metal Couplings for Connecting Vertical Sections of Such Piling End to End, Such Pans Being for Use in the Heavy Construction Industry | |