National Fuel Gas Co - Company Profile

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National Fuel Gas Co: Patents

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View up-to-date information on National Fuel Gas Co patents, including inventor and filing insights.

Patent Trends

Publication Identifier Document Type Title Classification-CPC Publication Date
US5918618A Grant Natural gas shut off system F16K31/1221; F17D1/04; F16K1/123; Y10T137/0396; Y10T137/6969 July 06, 1999
EP0816747A3 Search Report Absperrvorrichtung für Erdgas F16K1/123; Y10T137/6969; F17D1/04; F16K31/1221; Y10T137/0396; F16K01/12 July 29, 1998
EP0816747A2 Application Absperrvorrichtung für Erdgas F16K1/123; Y10T137/0396; Y10T137/6969; F17D1/04; F16K31/1221; F16K01/12 January 07, 1998
CA2202712A1 Application NATURAL GAS SHUT OFF SYSTEM F16K31/1221; F16K1/123; Y10T137/6969; Y10T137/0396; F17C01/02; F17D1/04 January 02, 1998
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Top Inventors by Filings (Count by publication)

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