hello Prof,

funny you mention all those dates.

I have looked at a SHARP refrigerator today, bought by a friend,

it explains on the back that R-134a, the refrigerant inside that machine is a NEW SOLUTION for GW.
1936 you wrote?

its amazing how stupid people are.

for surviving perpuses I will stick to good old R-12 and keep my haert rate within the normal.

chemi