TREA

Roger Funk

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  • Streetsboro, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Fertilizers containing polyamino acid
    • Patent number 7,534,280
    • Issue date May 19, 2009
    • The Davey Tree Expert Company
    • Roger Funk
    • C05 - FERTILISERS MANUFACTURE THEREOF
  • Information Patent Grant

    High analysis fertilizers
    • Patent number 4,089,670
    • Issue date May 16, 1978
    • The Davey Tree Expert Company
    • Roger Calvin Funk
    • C05 - FERTILISERS MANUFACTURE THEREOF
  • Information Patent Grant

    High analysis fertilizer
    • Patent number 4,036,627
    • Issue date Jul 19, 1977
    • The Davey Tree Expert Company
    • Roger Calvin Funk
    • C05 - FERTILISERS MANUFACTURE THEREOF

Patents Applicationslast 30 patents