73004770
Oct 29, 1973
Apr 22, 1975
SANDWICH PANELS CONSISTING PRIMARILY OF METAL WITH AN INSULATING CORE REINFORCED WITH METAL MEMBERS AND SOLD AS A COMPONENT OF COMPLETED VEHICLES-NAMELY, MOTOR HOMES, TRAVEL TRAILERS, BUSES, PICKUP TRUCK CAMPERS, VANS, CAMPER COACHES, FIFTH WHEEL TRAILERS, AND MOTOR VEHICLE SHELLS
Nonmetallic Building Materials