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  2. Chamberlain Group - Wikipedia

    en.wikipedia.org/wiki/Chamberlain_Group

    Raynor — the company's line of garage door openers for professional installers. This line of professional installers is slightly less common than LiftMaster. Craftsman — re-branded Chamberlain models sold at Sears. Those products have a "139" model prefix to denote that the Chamberlain Group made them for Sears.

  3. Garage door opener - Wikipedia

    en.wikipedia.org/wiki/Garage_door_opener

    The electric overhead garage door opener was invented by C.G. Johnson in 1926 in Hartford City, Indiana. [1] Electric Garage Door openers did not become popular until Era Meter Company of Chicago offered one after World War II where the overhead garage door could be opened via a key pad located on a post at the end of the driveway or a switch inside the garage.

  4. Electric gate - Wikipedia

    en.wikipedia.org/wiki/Electric_gate

    The major points are the maximum amount of force at certain test points. Example - a maximum of 400N of force can be applied in the last 50, 300 and 500 mm of travel of a gate, after the initial impact the force must drop to 150N within 0.75 of a second and reduce to 25N within 5 seconds. During the mid travel of a gate the allowable force is ...

  5. 300 Main (Winnipeg) - Wikipedia

    en.wikipedia.org/wiki/300_Main_(Winnipeg)

    300 Main (informally known as the Artis REIT Residential Tower) is a multi-family residential high-rise building on Main Street in Winnipeg, Manitoba, Canada. [3] Standing at 141.7 metres and 42 storeys, it is the tallest building in Winnipeg as well as in Manitoba.

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