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Making umbrella frames or members from wire
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Industry
CPC
B21F41/00
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Parent Industries
B
PERFORMING OPERATIONS TRANSPORTING
B21
Mechanical metalworking
B21F
WORKING OR PROCESSING OF METAL WIRE
Current Industry
B21F41/00
Making umbrella frames or members from wire
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Patents Grants
last 30 patents
Information
Patent Grant
2279349
Patent number
2,279,349
Issue date
Apr 14, 1942
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
1436893
Patent number
1,436,893
Issue date
Nov 28, 1922
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Patents Applications
last 30 patents