Nonmetallic building materials Trademarks Filed in February 23, 1960
TWIN-RIB

TWIN-RIB

Filed: February 23, 1960
Corrugated Aluminum Roofing and Siding Sheets
Owned by: Kaiser Aluminum & Chemical Corporation
Serial Number: 72091388

PREFLEX

PREFLEX

Filed: February 23, 1960
Beams, Stringers, Slabs and Other Constructional Elements Made in Metal, in Concrete or in Metal and Concrete
Owned by: PREFLEX, PROCEDES NOUVEAUX DE CONSTRUCTI
Serial Number: 72091439