4. B - Operations, Transporting
  5. 23
  6. B

Donald C. Jr. Pennington

B - Operations – Transporting – 23 – B

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Inventor

Country: United States Of America

Boron treated hard metal

C - Chemistry – Metallurgy – 04 – B
Patent

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Masonary drill tip with strong and chamfered cutting edges

B - Operations – Transporting – 23 – B
Patent

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Saw blade

B - Operations – Transporting – 23 – D
Patent

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Masonary drill tip with strong and chamfered cutting edges

B - Operations – Transporting – 23 – B
Patent

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Profile ID: LFCA-PAI-P-1161707

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