Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
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Karimierz Piotrowski
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Individual
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Individual
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Publication of GB190506355ApublicationCriticalpatent/GB190506355A/en
6355. Piotrowski, K. March 25. Bricks.-Headers a and stretchers f of clay or artificial stone are made with perforations b, which form continuous horizontal channels through the masonry, and with recesses c, which form vertical channels to receive mortar. Slots d are for the purpose of preventing the "advancing" of the material during moulding, and may terminate in grooves such as c.
GB190506355D1905-03-251905-03-25Improvements in and relating to Hollow Clay-bricks or Artificial Stones and the like.
ExpiredGB190506355A
(en)
Process for Hardening and Rendering Durable Coloured or Uncloured Objects Made of Soft or Porous Natural Stone, Plaster of Paris, Magnesite, Cement and the like.