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<p>[QUOTE="ritzyvintage, post: 3680770, member: 18191"]Just to add: The patent probably protects the process of fusing the 'stipple-like' glass effect to the panel. The glass-type could also be borosilicate (rather than soda glass) and this would require a higher heat to fuse the glass whilst avoiding cracks etc. when the fire screen is in use. Borosilicate has a much higher melting temperature in much the same way as PYREX does. It can cope with sudden alterations of heat from cold to red-hot with no problem! Unlike an ordinary glass vase can for example.[/QUOTE]</p><p><br /></p>
[QUOTE="ritzyvintage, post: 3680770, member: 18191"]Just to add: The patent probably protects the process of fusing the 'stipple-like' glass effect to the panel. The glass-type could also be borosilicate (rather than soda glass) and this would require a higher heat to fuse the glass whilst avoiding cracks etc. when the fire screen is in use. Borosilicate has a much higher melting temperature in much the same way as PYREX does. It can cope with sudden alterations of heat from cold to red-hot with no problem! Unlike an ordinary glass vase can for example.[/QUOTE]
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