My friend has to design an automatic swinging door but he's not know what he should do.
Can u tell me where can i find some information, documents about automatic swinging door.
Thanks a lot
I assume you are thinking of a patent. Be careful as there are crooked patent agencies out there. Start with the us government patent office. Do a web rearch for patent office and you will get a lot of (488529) references.
wzkb <They are just Jealous
that the Voices
don't talk to Them>