This is what this site is really about.
I have tried to bring in as much info as I have been able to do with anything related to air speakers, resulting
in the following categories:
Commercial air speakers, successful or not
Theoretical air speakers, ones that never made it past the prototype stage
Patents on air speakers from all over the world
A Cross-Link that attempts to fill in the gaps and add other references on air
References to useful documents related to air speakers
A list of Web links
Many thanks to those who have got in touch with their thoughts and additions, including: Pablo Gomez, Mike
Hatwell, Nicholas Braithwaite, Nick Merricks, Henri Bondar.