[Diy_efi] RE: More A/C trivia

[Greg Hermann]

At 9:08 AM 6/27/02, AnalogWz at aol.com wrote:
>Mark:
>Did you notice that environmental concerns about R-12 occurred after the
>patents expired when R-12 was selling for 88 cents/can at the corner auto
>parts store.
>R-134a has patents, and a higher price
>Jim
>
This, on the other hand is basically correct, although I believe it was the
patents on the _manufacturing process_ , not the compound itself, which
expired.

Greg



_______________________________________________
Diy_efi mailing list
Diy_efi at diy-efi.org
http://www.diy-efi.org/mailman/listinfo/diy_efi