B43L13/14 - CPC Classification

Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for Devices for drawing in perspective

• B43L13/141 » {Two-dimensional devices} 2
• B43L13/147 » {Three-dimensional devices} 1
• B43L13/148 » {using copying or multiple drawing arrangements} 1
• B43L13/149 » {including grids} 4
• B43L13/16 » free-hand 4

Recent Application in this class: