TREA

Louis B. Schaefer IV

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  • Medina, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Closure plug for ladle car
    • Patent number 4,390,170
    • Issue date Jun 28, 1983
    • Louis B. Schaefer
    • B22 - CASTING POWDER METALLURGY

Patents Applicationslast 30 patents

  • Information Patent Application

    VERTICAL CONVEYING SYSTEM
    • Publication number 20250197124
    • Publication date Jun 19, 2025
    • LEWCO, INC.
    • Ronald J. Guerra
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Application

    VARIABLE EXHAUST FAN FOR OVEN
    • Publication number 20240019131
    • Publication date Jan 18, 2024
    • LEWCO, INC.
    • Ronald J. Guerra
    • F24 - HEATING RANGES VENTILATING