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US Patents

R.sub.2 O-Al.sub.2 O.sub.3 /B.sub.2 O.sub.3 -P.sub.2 O.sub.5 gla

Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...

Patent

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Bloory idea and bloory practical use

Very broad patent, without practical use

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Patented to preserve knowledge

Defensive patent

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Manufacturing base and used to stop/slow down rivals

Serves only patent trolls

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