> The rumor that has been going around about the whole R-12 ban
> issue is this.
> Dupont holds the patent on the refrigerant R-12.  In the next
> couple of years
> their patent will run out.  They also hold the patent for R-134a
> which will
> not run out for many years to come.  You can draw your own
> conclusions from
> this I would imagine.

After inventing nylon, etc. Dupont managed to get that nasty old plant Hemp
plant outlawed.  I'm sure they have influenced other legislation over the
years.

Bryan