4. Wheel substitutes for land vehicles
  5. With interposed friction drive belt

Neil E. Borgman

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Blasthole drill having a drill pipe seal assembly

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – Fluid or cuttings directing or receiving means engaging bore...
Reexamination Certificate

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Blasthole drill with rotary head carriage resiliently held...

Boring or penetrating the earth – With above-ground means to advance or retract boring means
Reexamination Certificate

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Crawler shoe and method for making same

Wheel substitutes for land vehicles – With interposed friction drive belt
Patent

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Profile ID: LFUS-PAI-P-908301

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