4. Conveyors: power-driven
  5. Conveyor section
  6. Pusher conveyor and separate load support surface

Detlef Hahn

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Apparatus and method for simultaneous drilling and casing...

Boring or penetrating the earth – Processes – Boring curved or redirected bores
Reexamination Certificate

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Channel sections for scraper-chain conveyors

Conveyors: power-driven – Conveyor section – Pusher conveyor and separate load support surface
Patent

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Connections for inter-connecting the pans of scraper-chain conve

Conveyors: power-driven – Conveyor section – Pusher conveyor and separate load support surface
Patent

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Downlink pulser for mud pulse telemetry

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Reexamination Certificate

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Hydraulically balanced reciprocating pulser valve for mud...

Communications – electrical: acoustic wave systems and devices – Wellbore telemetering – Through well fluids
Reexamination Certificate

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Profile ID: LFUS-PAI-P-317281

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