Camping trailers; canopies for trailers; drawbars for trailers; horse trailers; livestock trailers; load carrying trailers; non-electric couplings for towing trailers; refrigerated trailers; road trailers; semi-trailers; supports for trailers and caravans (legs and dolly wheels); suspension apparatus for trailers; tarpaulins adapted (shaped) for use with vehicular trailers; tipping apparatus for trailers; tow bars for trailers; trailers (vehicles); trailers for motor land vehicles; trailers for towing boats; trailers for use with trucks; transport trailers; vehicle trailers