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Thorval L. Berg
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Warminster, PA, US
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last 30 patents
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Patent Grant
Seal assembly
Patent number
4,893,823
Issue date
Jan 16, 1990
Greene, Tweed & Co.
Gary L. Strouse
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Patent Grant
Annular seal
Patent number
4,067,407
Issue date
Jan 10, 1978
Greene, Tweed & Co., Inc.
Thorval L. Berg
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...