The present invention of a PL lamp holder comprises a holder shell, a holder body, and a holder mount for connecting the holder shell to the holder body. The holder shell is formed of funneled shape having a conical body, the holder body has a PL lamp on an upper portion of a cylindrical body and a lower...http://www.google.se/patents/US5971564?utm_source=gb-gplus-sharePatent US5971564 - PL lamp holder
