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Class Information
Number: 29/DIG.34
Name: Metal working > Scaling with other step

Patents under this class:

Patent Number Title Of Patent Date Issued
4510664 Method of producing a packing ring Apr. 16, 1985
4233725 Method and apparatus for inserting a flexible inner container within a rigid outer container Nov. 18, 1980
4189819 Method of manufacturing metallic spirally wound gaskets Feb. 26, 1980
4156307 Fabrication process for noncircular vacuum seal May. 29, 1979
3939551 Method of making polytetrafluoroethylene sealing elements with hydrodynamic action Feb. 24, 1976

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