CPC Subgroup
B43L 13/14 Devices for drawing in perspective
Full Title
Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for (stencils for surface decoration B44D) > Devices for drawing in perspective
5 direct subcodes
Child Classifications
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- B43L 13/16 free-hand
Top Applicants
Top 10 applicants by patent filingsfor class B43, 2013–2023, worldwide · Source: EPO PATSTAT
- SOCIETE BIC FR 422
- MITSUBISHI PENCIL COMPANY JP 381
- PILOT CORPORATION JP 299
- MITSUBISHI PENCIL COMPANY 213
- PILOT CORPORATION 100
- WACOM COMPANY JP 89
- STAEDTLER MARS & COMPANY DE 87
- KOTOBUKI JP 82
- CRAYOLA US 78
- SANFORD US 73