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John A. Von Essen

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  • Palmyra, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Continuous curve high solidity hydrofoil impeller
    • Patent number 5,326,226
    • Issue date Jul 5, 1994
    • Philadelphia Mixers Corporation
    • Wojciech Wyczalkowski
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Hydrofoil impeller
    • Patent number 5,297,938
    • Issue date Mar 29, 1994
    • Philadelphia Mixers Corporation
    • John A. Von Essen
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL