4. Compositions: ceramic
  5. Ceramic compositions
  6. Refractory

G. F. Chernivec

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Fixed-focus triplet projection lens for overhead projectors

Optical: systems and elements – Lens – Multiple component lenses
Patent

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Method of making thin refractory flakes

Compositions: ceramic – Ceramic compositions – Refractory
Patent

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Profile ID: LFUS-PAI-P-128084

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