using punches or dies

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Industry

CPC
B31B2219/225

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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B31Paper goods B31BMAKING BOXES, CARTONS, ENVELOPES OR BAGS OF PAPER OR CARDBOARD B31B2219/00Specific operations carried out during bag making

Current Industry

B31B2219/225using punches or dies

Industries

Patents Grantslast 30 patents

Information Patent Grant
3115999
- Patent number 3,115,999
- Issue date Dec 31, 1963
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...