Connector for Toshiba Laptop/Boeing 747-400

Archived from groups: comp.sys.laptops (More info?)

I will be flying business class in a United Airlines Boeing 707-400 Sydney
to Los Angeles shortly and I am trying to find details of the connector
plug/lead required to power my Toshiba Sattellite 1405-S171. Other than
recommending the purchase of a brand new $US100+ adaptor set, United don't
seem to be able to help me. I have a half a dozen or more leads and
conversion plugs to operate my laptop and its adaptor on 240Vac, 110Vac, a
car cigar lighter, and even just car battery terminal clips.
What exactly does the seat outlet plug look like and what current does it
produce, please?
Regards, Fred