Grooved or vaulted roofing elements of specified materials {not covered by any one of groups [CPC: E04D1/04] - [CPC: E04D1/085]}, or of combinations of materials, {where at least one is} not covered by any one of groups [CPC: E04D1/04] - [CPC: E04D1/085]
Grooved or vaulted roofing elements of specified materials {not covered by any one of groups [CPC: E04D1/04] - [CPC: E04D1/085]}, or of combinations of materials, {where at least one is} not covered by any one of groups [CPC: E04D1/04] - [CPC: E04D1/085]