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Industry
CPC
B21K11/04
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Parent Industries
B
PERFORMING OPERATIONS TRANSPORTING
B21
Mechanical metalworking
B21K
MAKING FORGED OR PRESSED METAL PRODUCTS
B21K11/00
Making cutlery wares Making garden tools or the like
Current Industry
B21K11/04
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Patents Grants
last 30 patents
Information
Patent Grant
2159329
Patent number
2,159,329
Issue date
May 23, 1939
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
1638902
Patent number
1,638,902
Issue date
Aug 16, 1927
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
1371469
Patent number
1,371,469
Issue date
Mar 15, 1921
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
1091415
Patent number
1,091,415
Issue date
Mar 24, 1914
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Patents Applications
last 30 patents