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Operating system for high speed tunnel trains

Railways – Tubular way
Patent

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Pipe crawler apparatus

Railways – Tubular way
Reexamination Certificate

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Pipe crawler with extendable legs

Railways – Tubular way – Internal service device
Patent

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Pipe crawler with stabilizing midsection

Railways – Tubular way – Internal service device
Patent

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Pipe internal towing carriage

Railways – Tubular way – Internal service device
Patent

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Pipeline crawler

Railways – Tubular way – Internal service device
Patent

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Pipeline inspection vehicles

Railways – Tubular way – Internal service device
Patent

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Pipeline vehicle

Railways – Tubular way – Internal service device
Patent

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Piping travelling apparatus

Railways – Tubular way – Internal service device
Patent

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Plant for pneumatic transport

Railways – Tubular way – Internal service device
Patent

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Pneumatic load transportation system

Railways – Tubular way – Internal service device
Patent

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Pneumatic pipeline transport system

Railways – Tubular way – Internal service device
Patent

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Pneumatic propulsion track apparatus

Railways – Tubular way
Reexamination Certificate

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Pneumatic transportation system

Railways – Tubular way – Internal service device
Patent

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Pneumatically conveyed container with air tight sealing and guid

Railways – Tubular way – Internal service device
Patent

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Pneumatically propelled duct motor

Railways – Tubular way – Internal service device
Patent

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Pneumatically propelled railway car transportation system

Railways – Tubular way – Internal service device
Patent

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Propelling mechanism and traveling device propelled thereby

Railways – Tubular way – Internal service device
Patent

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Pump transport device

Railways – Tubular way – Internal service device
Patent

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Rapid transit system

Railways – Tubular way – Internal service device
Patent

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