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Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
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MAKING NEEDLES, PINS OR NAILS
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Making needles used for performing operations (forming heads on pin-like needles B21G 3/12; making U-shaped hairpins B21G 7/04)
B21G 1/003
.
{
Needles for special purposes, e.g. knitting, crochet, hat-pins
}
B21G 1/006
.
{
Special treatments of pins or needles, e.g. annealing, straightening
}
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B21G 1/02
.
of needles with eyes, e.g. sewing-needles, sewing-awls
B21G 1/04
. .
of needles specially adapted for use in machines or tools
B21G 1/06
.
of needles with hook or barb, e.g. crochet hooks
.
of hollow needles or needles with hollow end, e.g. hypodermic needles, larding-needles (B21G 1/10 takes precedence)
B21G 1/10
.
equipped with locking means for the material to be drawn through, e.g. for repairing tubeless tyres
B21G 1/12
.
Securing, cleaning-off burrs, reconditioning polishing, grinding (takes precedence over B21G 1/02 to B21G 1/10)
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Making pins, nails, or the like (of pins with individual caps B21G 5/00; of U-like shape B21G 7/00; of split-pins B21G 7/08)
B21G 3/005
.
{
Nails or pins for special purposes, e.g. curtain pins
}
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B21G 3/02
.
of pins of the kind used in the tailoring trade or the house- hold
B21G 3/04
. .
with locking or shielding device for the pin point, e.g. safety-pins
B21G 3/06
.
of nails with shoulders
B21G 3/08
.
of nails with head and two or more shanks or split shanks
B21G 3/10
.
of undulated nails or pins
B21G 3/12
.
Upsetting; Forming heads
B21G 3/14
.
Reducing diameter of parts otherwise than by rolling
B21G 3/16
.
Pointing; with or without cutting
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B21G 3/18
.
by operations not restricted to one of the groups B21G 3/12 to B21G 3/16 (B21G 3/06 to B21G 3/10 take precedence)
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B21G 3/20
. .
from wire of indefinite length (by rolling B21G 3/30)
B21G 3/22
. . .
in pairs arranged head to head
B21G 3/24
. . .
by simultaneously forming the head of one nail and the adjacent point of another
B21G 3/26
. .
by cutting from strip or sheet material
B21G 3/28
. .
by forging or pressing
B21G 3/30
. .
by rolling
B21G 3/32
.
Feeding material to be worked to nail or pin making machines
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Making pins or nails with attached caps or with coated heads
B21G 5/02
.
of drawing-pins or pins of drawing-pin type
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Making pins of U-like shape or split-pins (of paper fasteners or staples B21D 53/46, B21F 45/16)
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B21G 7/02
.
of U-like shape
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B21G 7/04
. .
of hairpins
B21G 7/06
. . .
of undulated hairpins
B21G 7/08
.
of split-pins, e.g. cotter-pins
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013