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  2. ResMed - Wikipedia

    en.wikipedia.org/wiki/ResMed

    ResMed Inc. is an American medical equipment company based in San Diego, California. It primarily provides cloud-connectable medical devices for the treatment of ...

  3. Copper tubing - Wikipedia

    en.wikipedia.org/wiki/Copper_tubing

    Therefore, one-inch nominal type L copper tube and 1 + 1 ⁄ 8 th inch type D ACR tube are exactly the same size, with different size designations. ACR pipe is manufactured without processing oils that would be incompatible with the oils used to lubricate the compressors in the air conditioning system.

  4. Pneumatic tube - Wikipedia

    en.wikipedia.org/wiki/Pneumatic_tube

    A pneumatic tube system in Washington, D.C., in 1943. Pneumatic tubes (or capsule pipelines, also known as pneumatic tube transport or PTT) are systems that propel cylindrical containers through networks of tubes by compressed air or by partial vacuum. They are used for transporting solid objects, as opposed to conventional pipelines which ...

  5. List of Kolkata Metro stations - Wikipedia

    en.wikipedia.org/wiki/List_of_Kolkata_Metro_stations

    This is the list of the stations of Kolkata Metro, a Mass Rapid transit Urban Railway network serving the city of Kolkata, India.It was the first underground railway to be built in India, with the first operations commencing in October 1984 and the full stretch that was initially planned being operational by February, 1995. [1]

  6. Netaji Subhas Chandra Bose International Airport - Wikipedia

    en.wikipedia.org/wiki/Netaji_Subhas_Chandra_Bose...

    Spread over an area of 6.64 square kilometres (2.56 sq mi), Kolkata Airport is the largest hub for air traffic in the eastern part of the country and one of four operational airports in West Bengal, the others being Bagdogra International Airport in Siliguri, Cooch Behar Airport in Cooch Behar and Kazi Nazrul Islam Airport in Durgapur.

  7. Kolkata Metro - Wikipedia

    en.wikipedia.org/wiki/Kolkata_Metro

    Kolkata Metro is the 2nd busiest metro system in India. 2,465 travel by every Metro train in Kolkata against 1,110 in Delhi metro. Kolkata Metro carries around 700,000 people daily. [138] The daily and annual ridership has consistently risen since 1984. Low fares and fast and convenient travel have contributed to the high ridership figures.