Hide meta info on search results but not blog posts

Hi

Ho can I hide the meta info on search results …

http://screencast.com/t/eMkrBz6ZLg8M

http://dev2.electrixinternational.com/?s=trunking+length

… but leave it visible on blog posts

http://screencast.com/t/JsJ9V0ct2

dev2.electrixinternational.com

span.post-meta-infos {
    display: none;
    visibility: hidden;
}

I have tried the above, but that hides it everywhere.