"Johannison block" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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          "ref": "1951, Isaac Asimov, Foundation (1974 Panther Books Ltd publication), part V: “The Merchant Princes”, chapter 8, page 154, ¶¶ 4–5",
          "text": "Mallow stood them upright and shaved the ends off with a single stroke of the shear, and then joined the pipes, fresh cut to fresh cut. [¶] And there was a single pipe! The new ends, with even atomic irregularities missing, formed one piece upon joining. Johannison blocks, at a stroke."
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        "Misspelling of Johansson block."
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  "word": "Johannison block"
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  "lang_code": "en",
  "pos": "noun",
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          "ref": "1951, Isaac Asimov, Foundation (1974 Panther Books Ltd publication), part V: “The Merchant Princes”, chapter 8, page 154, ¶¶ 4–5",
          "text": "Mallow stood them upright and shaved the ends off with a single stroke of the shear, and then joined the pipes, fresh cut to fresh cut. [¶] And there was a single pipe! The new ends, with even atomic irregularities missing, formed one piece upon joining. Johannison blocks, at a stroke."
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  "word": "Johannison block"
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