patents are typically valid for 20 years or so depending on jurisdiction. So unless Boeing has done a bunch of research/patenting after the year 2000 is not something to worry about.
If you're contracting in Sweden you are 90% looking at Stockholm (the remaining 10% being Gothenburg or Malmö/Copenhagen). My experience is that Stockholm hourly rates are around 750-1200 SEK which would be ap. 70-110 EUR.
I have not worked in London but a quick search says the rates are pretty similar.
oh man I read those as well! Nostalgia overload right now.