Re: publication delays...

In message 
<85256930(_dot_)0071B6B3(_dot_)00(_at_)d54mta04(_dot_)raleigh(_dot_)ibm(_dot_)com>,
 rhboivie(_at_)us(_dot_)ibm(_dot_)com
 writes:
> Let's see.  Current patent law says that a patent is good
> for 20 years from the date of filing so I guess Friedman's
> patent expired in 1953.  Tough break, Bill.

But it was filed under the old law, so it's good till 2017.  I guess 
we'll all have to be careful about building any new rotor machines.


                --Steve Bellovin