Edward F. Urquhart

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Issaquah, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Relief valve for use with hermetically sealed flexible container
- Patent number 5,992,442
- Issue date Nov 30, 1999
- Edward F. Urquhart
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL