4. C - Chemistry, Metallurgy
  5. 04
  6. B

David John Ball

C - Chemistry – Metallurgy – 04 – B

Inventor

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Inventor

Country: United Kingdom

A lid holding apparatus

A - Human Necessities – 47 – J
Patent

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Calcination apparatus

C - Chemistry – Metallurgy – 04 – B
Patent

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Method and apparatus for heating and grinding materials

B - Operations – Transporting – 02 – C
Patent

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A lid holding apparatus

A - Human Necessities – 47 – J
Patent

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Profile ID: LFCA-PAI-P-1146212

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