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2020
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Invention
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Blower and ventilation system.
Provided is a blower installed at a manhole opening, with which i... |
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2019
|
Invention
|
Acid-resistant concrete, precast concrete, and method for producing acid-resistant concrete. Prov... |
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2018
|
Invention
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Scum accumulation-inhibiting device. The present invention addresses the problem of providing a s... |
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2017
|
Invention
|
Optical fiber relay apparatus and sewerage pipe communication system. Provided are an optical fib... |
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2015
|
Invention
|
Blower and ventilating system.
Provided is a blower installed at a manhole opening, with which i... |
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Invention
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Blower and ventilating system. The purpose of this invention is to provide a blower to be install... |
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Invention
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Opening/closing device. An opening/closing device according to the present invention includes a g... |
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Invention
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Opening and closing device. This opening and closing device comprises a gate, a fall prevention u... |
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2014
|
Invention
|
Wastewater treatment apparatus, wastewater treatment method, wastewater treatment system, control... |
|
|
Invention
|
Blower and ventilation system.
There is provided is a blower installed at a manhole opening, wit... |
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2013
|
Invention
|
Wastewater treatment device, wastewater treatment method, wastewater treatment system, control de... |
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2012
|
Invention
|
Fan and ventilation system. Provided is a fan to be set in a manhole opening through which the en... |
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2011
|
Invention
|
Vortex flow type water surface control device for draining device. A control plate is provided at... |
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|
Invention
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Vortex flow type water surface control device for drainage system. The present invention addresse... |
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|
Invention
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Vortex flow type water surface control device for draining device. A vortex flow type water surfa... |
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2010
|
Invention
|
Opening/closing device. An opening/closing device includes a gate that receives a flow of a sewag... |
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|
Invention
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Opening/closing device. a that generates a force for bringing the gate 10 into an upright state, ... |
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|
Invention
|
Opening-closing device. An opening-closing device (1) provided with a gate (10) which can receive... |
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|
Invention
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Opening-closing device. An opening-closing device (1) comprising: a gate (10) which can receive t... |
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2004
|
Invention
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Shield tunneling machine. A shield tunneling machine has a shield body and a cutter head rotatabl... |
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|
Invention
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Vortex flow type water surface control device for draining device. In a conventional storm overfl... |
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|
Invention
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Vortex flow type water surface control device for drainage system. A vortex flow type water surfa... |
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1992
|
Invention
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Method and apparatus for controlling sludge dewatering. The feature of the present invention resi... |
