4. Hydraulic and earth engineering
  5. Miscellaneous

John Houston

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Heavy duty power-assisted toilet seat lift assembly

Baths – closets – sinks – and spittoons – Flush closet seat assist to raise user
Patent

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Machines for positioning roof supports in a tunnel

Hydraulic and earth engineering – Miscellaneous
Patent

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Synchronized vibration device for haptic feedback

Electricity: motive power systems – Automatic and/or with time-delay means – Sound – supersonic vibration or mechanical vibration
Reexamination Certificate

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System and methods for metering and analyzing energy...

Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate

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Profile ID: LFUS-PAI-P-487797

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