John J. O'Hara

Person

  • Annville, PA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Draft control method and apparatus for material processing plants

    • Patent number 5,160,259
    • Issue date Nov 3, 1992
    • Hauck Manufacturing Company
    • John O'Hara
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    Burner

    • Patent number 4,341,512
    • Issue date Jul 27, 1982
    • Hauck Manufacturing Company
    • Raymond J. Wojcieson
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES