Leon wrote:
"Toller" wrote in message
...

A year later I went to Mexico and found it on the door of a house built in
1575.
Yet the US Patent Office gave him a patent.
Go figure.

If the original actually had a Patent, it may have run out. Patents running
out is the real "bottom line" reason that R12 is no longer used as a
refrigerant in the US.

With the way the US Patent and Trademark works today, they should simply
remake the application and resubmit. It's guaranteed they'll get a new
patent on the old tech.

er
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