1. CPC Sections
  2. CPC Section B
  3. CPC Class B43
  4. CPC Subclass B43L
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CPC
COOPERATIVE PATENT CLASSIFICATION
​
B43L
ARTICLES FOR WRITING OR DRAWING UPON; {WRITING OR DRAWING AIDS;} ACCESSORIES FOR WRITING OR DRAWING (workshop equipment for marking-out work B25H 7/00; teaching hand-writing or drawing G09B 11/00) [2013-01]
NOTE

  • Devices used for both teaching and facilitating writing or drawing are classified in G09B 11/00)
Articles for writing or drawing upon [2013-01]
B43L 1/00
Repeatedly-usable boards or tablets for writing or drawing (drawing-boards B43L 5/00) [2013-01]
B43L 1/002
.
{chemical details} [2013-01]
B43L 1/004
.
{with illuminating devices} [2013-01]
B43L 1/006
. .
{with luminescent substances} [2013-01]
B43L 1/008
.
{with magnetic action} [2013-01]
B43L 1/02
.
Slates [2013-01]
B43L 1/04
.
Blackboards ({wall mounting or suspension arrangements for blackboards or the like A47B 97/001}; easels or stands for blackboards A47B 97/04) [2013-01]
B43L 1/045
. .
{with magnetic action} [2013-01]
B43L 1/06
. .
rigid [2013-01]
B43L 1/08
. .
flexible [2013-01]
B43L 1/10
. .
Writing surfaces thereof [2013-01]
B43L 1/12
.
having translucent writing surfaces producing visual impressions by co-operation with backing members {(B43L 1/008 takes precedence)} [2017-08]
B43L 1/123
. .
{Flexible writing surface or backing} [2013-01]
B43L 1/126
. . .
{withinterposed adhesive substances} [2013-01]
B43L 3/00
Writing or drawing underlays, e.g. blotting pads (blotters B43L 17/00; {supports for note pads: B42D 5/005}) [2013-01]
B43L 3/001
.
{with illuminating devices} [2013-01]
B43L 3/002
. .
{with luminescent substances} [2013-01]
B43L 3/004
.
{without blotting means} [2013-01]
B43L 3/005
.
{provided with a casing} [2013-01]
B43L 3/007
.
{with rain protection means} [2013-01]
B43L 3/008
.
{with supporting means (bracelets with means for attaching a writing instrument or a memo pad A44C 5/0046; for attachment to shopping trolleys B62B 3/1428)} [2013-01]
B43L 5/00
Drawing boards (drawing desks or tables A47B 27/00, A47B 85/02; stands for drawing-boards A47B 97/04) [2013-01]
B43L 5/002
.
{with pivoting drawing surface} [2013-01]
B43L 5/005
.
{with magnetic action} [2013-01]
B43L 5/007
.
{drawing copying devices using a transparency} [2013-01]
B43L 5/02
.
having means for clamping sheets of paper thereto (drawing-pins B43M 15/00) [2013-01]
B43L 5/022
. .
{with magnets} [2013-01]
B43L 5/025
. .
{with paper rolls} [2013-01]
B43L 5/027
. .
{with suction devices} [2013-01]
Writing or drawing aids [2013-01]
​
B43L 7/00
Straightedges (guides; curve rulers or templets B43L 13/20; straightedges characterised by the provision of indicia or the like for measuring, e.g. rulers or tapes with measuring scales or marks for direct reading, G01B) [2017-08]
NOTE

  • In this group, the following term is used with the meaning indicated:
    • "straightedge" means an instrument or its edge serving the purpose of acting as a guide for the drawing of a straight line.
B43L 7/002
.
{for drawing boards and tables} [2013-01]
B43L 7/005
.
{combined with other drawing aids} [2013-01]
B43L 7/007
.
{with holding means} [2013-01]
B43L 7/02
.
T-squares {and other similar squares} [2013-01]
B43L 7/023
. .
{with magnets} [2013-01]
B43L 7/027
.
Plural non-adjustable straightedges fixed at right angles (B43L 7/02 takes precedence) [2013-01]
B43L 7/0275
. .
{Triangles} [2013-01]
B43L 7/033
.
Plural non-adjustable straightedges forming non-right angles [2013-01]
B43L 7/04
.
with rollers (with interconnected rollers B43L 13/02) [2013-01]
B43L 7/08
.
with arrangements for attaching additional drawing equipment, e.g. for hatching, dotting [2016-08]
B43L 7/10
.
Plural straightedges relatively movable [2013-01]
B43L 7/12
. .
Square and pivoted straightedges [2013-01]
B43L 7/125
. . .
{Comprising at least two straightedges remaining parallel} [2013-01]
B43L 7/14
. .
Square and sliding straight edges [2013-01]
B43L 9/00
Circular curve-drawing or like instruments (curve rulers or templets B43L 13/00) [2013-01]
B43L 9/002
.
{with perforated or marked discs} [2013-01]
B43L 9/005
.
{with rollers or carriages} [2013-01]
B43L 9/007
.
{with perforated or marked rulers} [2013-01]
B43L 9/02
.
Compasses (proportional compasses B43L 9/08; {Compasses for drawing ellipses B43L 11/041;} Compasses for drawing spirals B43L 11/06) [2013-01]
B43L 9/025
. .
{Compasses with parallel legs} [2013-01]
B43L 9/04
. .
Beam compasses [2013-01]
B43L 9/045
. . .
{Tape compasses} [2013-01]
B43L 9/06
. .
with legs formed by flat springs [2013-01]
B43L 9/08
.
Proportional compasses or dividers [2013-01]
B43L 9/10
. .
with arrangements for drawing polygons [2013-01]
B43L 9/12
.
Dividers (proportional dividers B43L 9/08) [2013-01]
B43L 9/14
.
with changeable leg-ends for conversion into compasses, dividers, or callipers (B43L 9/24 takes precedence) [2013-01]
B43L 9/16
.
Features common to compasses, dividers, and callipers [2013-01]
B43L 9/18
. .
Legs with toggle joints [2013-01]
B43L 9/20
. .
Pivots [2013-01]
B43L 9/22
. .
Leg-angle adjusting-means separate from pivots [2013-01]
B43L 9/24
. .
Means for mounting points or writing appliances on legs [2013-01]
B43L 9/245
. . .
{for mounting centering elements} [2013-01]
B43L 11/00
Non-circular-curve-drawing instruments (curve rulers or templets B43L 13/20) [2013-01]
B43L 11/005
.
{pendulum-actuated} [2013-01]
B43L 11/02
.
for drawing conic sections [2013-01]
B43L 11/04
. .
for drawing ellipses [2013-01]
B43L 11/041
. . .
{by means of a compass} [2013-01]
B43L 11/043
. . .
{with stencils} [2013-01]
B43L 11/045
. . .
with cords or like flexible elements [2013-01]
B43L 11/05
. . .
with gears [2013-01]
B43L 11/055
. . .
with guides [2013-01]
B43L 11/06
.
for drawing spirals [2013-01]
B43L 11/08
.
for drawing involutes [2013-01]
B43L 12/00
Means to prevent slippage [2013-01]
B43L 12/02
.
magnetic {(magnetic holding means for T-squares: B43L 7/023)} [2013-01]
B43L 13/00
Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for (stencils for surface decoration B44D) [2013-01]
B43L 13/001
.
{Mathematical drawing instruments} [2013-01]
B43L 13/002
. .
{Angle intersecting devices} [2013-01]
B43L 13/004
.
{Manual lettering devices} [2013-01]
B43L 13/005
.
{Portable combined drawing-aids including boards} [2013-01]
B43L 13/007
.
{Contour tracing devices} [2013-01]
B43L 13/008
.
{Circle transformers} [2013-01]
B43L 13/02
.
Draughting machines or drawing devices for keeping parallelism (T-squares B43L 7/02) [2013-01]
B43L 13/022
. .
{automatic (apparatus for recording measured values G01D; control systems for drawing machines G06K 15/22, G06F 3/13)} [2017-08]
B43L 13/024
. . .
{Drawing heads therefor} [2013-01]
B43L 13/026
. . .
{for writing characters or symbols (manual lettering devices B43L 13/004)} [2013-01]
B43L 13/028
. .
{Hand held or associated with the writing instrument} [2013-01]
B43L 13/04
. .
Guides for rulers [2013-01]
B43L 13/041
. . .
{with toothed racks} [2013-01]
B43L 13/043
. . .
{with squares} [2013-01]
B43L 13/045
. . .
{with carriages} [2013-01]
B43L 13/046
. . .
{with cables} [2013-01]
B43L 13/048
. . .
{with T-squares} [2013-01]
B43L 13/06
. . .
with pivoted guide rods [2013-01]
B43L 13/08
. .
Protractor heads [2013-01]
B43L 13/10
.
Pantographic instruments for copying, enlarging, or diminishing (arrangements for copying in machine tools B23Q) [2013-01]
B43L 13/12
. .
Multiple writing devices [2013-01]
B43L 13/14
.
Devices for drawing in perspective [2013-01]
B43L 13/141
. .
{Two-dimensional devices} [2013-01]
B43L 13/142
. . .
{T-squares (T-squares in general B43L 7/02)} [2013-01]
B43L 13/143
. . .
{mounted on parallel-motion drawing appliances (parallel devices in general B43L 13/02)} [2013-01]
B43L 13/144
. . .
{including protractors} [2013-01]
B43L 13/145
. . .
{Rulers (rulers in general B43L 7/00)} [2013-01]
B43L 13/146
. . .
{Squares (squares in general B43L 7/02)} [2013-01]
B43L 13/147
. .
{Three-dimensional devices} [2013-01]
B43L 13/148
. .
{using copying or multiple drawing arrangements} [2013-01]
B43L 13/149
. .
{including grids} [2013-01]
B43L 13/16
. .
free-hand [2013-01]
B43L 13/18
. . .
having optical or projecting equipment (optical systems or apparatus G02B; projectors G03B) [2013-01]
B43L 13/20
.
Curve rulers or templets [2013-01]
B43L 13/201
. .
{Stencils for drawing figures, objects} [2013-01]
B43L 13/203
. . .
{human, animal, or vegetal figures} [2013-01]
B43L 13/205
. . .
{geometrical figures} [2013-01]
B43L 13/206
. . .
{material objects} [2013-01]
B43L 13/208
. . .
{letters, numbers, symbols (lettering devices B43L 13/004)} [2013-01]
B43L 13/22
. .
Adjustable curve rulers [2013-01]
B43L 13/24
.
Devices for generating stepwise movements of drawing equipment, e.g. for hatching [2013-01]
B43L 15/00
Supports for attachment to hands or arms for facilitating writing or drawing [2013-01]
Writing or drawing accessories [2013-01]
B43L 17/00
Blotters (blotting pads B43L 3/00; combined with writing implements B43K 29/04; making blotting paper D21F 11/14) [2013-01]
B43L 17/02
.
for blotting-paper sheets [2013-01]
B43L 17/04
. .
hand held [2013-01]
B43L 17/06
.
for reeled blotting-paper [2013-01]
B43L 17/08
. .
Roller blotters [2013-01]
B43L 17/10
.
using blotting material other than paper [2013-01]
B43L 19/00
Erasers, rubbers, or erasing devices; Holders therefor (rubbers or erasing knives combined with writing implements B43K 29/02, B43K 29/18) [2013-01]
B43L 19/0006
.
{motor-driven} [2013-01]
B43L 19/0012
. .
{Mechanical motors, e.g. springs, spindles} [2013-01]
B43L 19/0018
.
{with fluids} [2013-01]
B43L 19/0025
.
{Eraser or rubber material, e.g. comprising hard particles} [2013-01]
B43L 19/0031
. .
{comprising magnetic particles therein} [2013-01]
B43L 19/0037
.
{Eraser cleaners} [2013-01]
B43L 19/0043
.
{Erasing by electronic or electrolytic means} [2013-01]
B43L 19/005
.
{Finger mounted erasers} [2013-01]
B43L 19/0056
.
{Holders for erasers} [2013-01]
B43L 19/0062
. .
{Magnetic holders} [2013-01]
B43L 19/0068
. .
{Hand-held holders} [2013-01]
B43L 19/0075
. . .
{of the pencil type} [2013-01]
B43L 19/0081
. . . .
{of the mechanical pencil type} [2013-01]
B43L 19/0087
.
{Assembling, repairing or finishing erasers} [2013-01]
B43L 19/0093
.
{Eraser shields} [2013-01]
B43L 19/02
.
Erasing knives (knives in general B26B) [2013-01]
B43L 19/04
.
Fibrous erasers [2013-01]
B43L 21/00
Blackboard or slate cleaning devices [2013-01]
B43L 21/02
.
with means for absorbing the chalk dust [2013-01]
B43L 21/04
.
Wiper holders [2013-01]
B43L 23/00
Sharpeners for pencils or leads (grinding or cutting tools in general B24; B26; combined with writing implements B43K 29/06) [2013-01]
B43L 23/002
.
{with continuous conveying means for the pencil} [2013-01]
B43L 23/004
.
{with radial cutting blades} [2013-01]
B43L 23/006
.
{with rasping surfaces} [2013-01]
B43L 23/008
.
{with rotating cutting bodies} [2013-01]
B43L 23/02
.
with gearing [2013-01]
B43L 23/04
. .
with cranked handles [2013-01]
B43L 23/06
.
in which the pencils or leads are sharpened by only axial movement against cutting blades [2013-01]
B43L 23/08
.
in which the pencils or leads are sharpened mainly by rotational movement against cutting blades (B43L 23/02 takes precedence) [2013-01]
B43L 23/085
. .
{one of the blades being used for shaping the writing point} [2013-01]
B43L 25/00
Ink receptacles (liquid receptacles in general B65D, e.g. B65D 1/00) [2013-01]
B43L 25/001
.
{with adjustable depth of dipping} [2013-01]
B43L 25/002
.
{Caps or closure means for ink receptacles (closure means for containers in general B65D)} [2013-01]
B43L 25/004
.
{Ink receptacles with solid ink; Non reversable receptacles} [2013-01]
B43L 25/005
.
{Ink receptacles incorporated in a table or a bench} [2013-01]
B43L 25/007
.
{Portable ink receptacles; Filling devices for receptacles} [2013-01]
B43L 25/008
.
{with wick feed} [2013-01]
B43L 25/02
.
with separate dipping-cups [2013-01]
B43L 25/04
. .
supplied by pressure arrangements [2013-01]
B43L 25/06
. .
supplied by tilting the receptacles [2013-01]
B43L 25/08
.
with arrangements for dissolving ink powder [2013-01]
B43L 25/10
.
with means for holding objects [2013-01]
B43L 25/12
.
with pen-wiping means [2013-01]
B43L 27/00
Ink stands [2013-01]
B43L 27/02
.
having means for securing objects thereon [2013-01]
B43L 27/04
.
securable to other objects [2013-01]