4. Boring or penetrating the earth
  5. Bit or bit element
  6. Specific or diverse material

Steven G. Caldwell

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Articles having improved resistance to thermal cracking

Stock material or miscellaneous articles – All metal or with adjacent metals – Having metal particles
Reexamination Certificate

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Earth-boring bits

Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Metal and nonmetal in final product
Reexamination Certificate

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Earth-boring bits

Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Reexamination Certificate

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High efficiency shield array

Radiant energy – Radiation controlling means – Shields
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2309237

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