Copies of patents, which contain fuller details and the addresses of
inventors, are available from science reference libraries around Britain.
For details of free public access and purchase price, contact the London
Patent Office at State House, 66-71 High Holborn, London WC1R
4TP (Tel 071-831 2525) or Science Reference and Information Service at 25
Southampton Buildings, London WC2A 1AY (Tel 071-323 7919).
More from New Scientist
Explore the latest news, articles and features

Environment
First test of CO2 removal with green sand finds no harm to marine life
News

Space
SpaceX is about to launch tallest and most powerful rocket in history
News

Environment
Cleaning up air pollution could weaken vital AMOC ocean current
News

ÎçÒ¹¸£Àû1000¼¯ºÏ
CAR T-cell therapy bolstered by stiffening up cancer cells first
News
Popular articles
Trending New Scientist articles
1
Why autism pioneer Uta Frith wants to dismantle the spectrum
2
Neanderthals treated a dental cavity by drilling into the tooth
3
Rebooting stem cells builds aged muscles and assists injury recovery
4
SpaceX is about to launch tallest and most powerful rocket in history
5
Where did the laws of physics come from? I think I've found the answer
6
First test of CO2 removal with green sand finds no harm to marine life
7
Asteroid set to fly very close to Earth
8
Melting of Greenland ice sheet could release methane 'fire ice'
9
Will burying dead trees after a wildfire keep their carbon locked up?
10
Carbon credits are flawed, but they can still help save forests