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Richard W. Sievers

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  • South Windsor, CT, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of forming a multiple coil heat exchanger
    • Patent number 4,599,773
    • Issue date Jul 15, 1986
    • Thermodynetics Inc.
    • Richard W. Sievers
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Multiple coil heat exchanger
    • Patent number 4,495,989
    • Issue date Jan 29, 1985
    • Spiral Tubing Corporation
    • Richard W. Sievers
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Multiple coil heat exchanger
    • Patent number 4,424,624
    • Issue date Jan 10, 1984
    • Spiral Tubing Corp.
    • Richard W. Sievers
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...