TREA

Leonid Georgievich Rozhkov

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  • Novosibirsk, SU
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Patents Grantslast 30 patents

  • Information Patent Grant

    Device for forming underground pipelines
    • Patent number 4,181,484
    • Issue date Jan 1, 1980
    • Alexandr D. Kostylev
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Method of forming castings in holes
    • Patent number 4,088,720
    • Issue date May 9, 1978
    • Alexandr D. Kostvlev
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pneumatic impact devices
    • Patent number 4,070,948
    • Issue date Jan 31, 1978
    • Khaim Berkovich Tkach
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method of making built-in-place reinforced concrete piles
    • Patent number 4,063,423
    • Issue date Dec 20, 1977
    • Konstantin Stepanovich Gurkov
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Soil sampler
    • Patent number 3,955,631
    • Issue date May 11, 1976
    • Alexandr Dmitrievich Kostylev
    • E21 - EARTH DRILLING MINING