> I want to write a driver for a Xircom Pe3. The PE3 uses two chips,
> a fujitsu (who datasheat is available at the web site) and a Xircom
> Proprietary one. The Xircom chip is describe in detail in a US
> Patent.
>
> Can I use the US patent as source of information of a GNU device
> driver?
Yes, I believe this is acceptable.
Providing you don't violate the patent or any copyright laws (are
parents documents copyright USPO?) you should be OK.
(Actually, I'd like to know if the patent provides enough information
to write a driver, in theory it should, but in practice I suspect
many don't).
-cw
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