DIFF Subgroup
B27B 3/30 Blade attachments, e.g. saw buckles; Stretching devices
Introduced: September 1968
Full Title
Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks > Components > Blade attachments, e.g. saw buckles; Stretching devices
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
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- B27B 3/32 the stretching devices being equipped with screw-threaded or wedging means IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B27,2013–2023, worldwide · Source: EPO PATSTAT
- NANJING FORESTRY UNIVERSITY 960
- ROBERT BOSCH DE 762
- HOMAG DE 384
- HARBIN ARTS AND CRAFTS COMPANY 350
- NORTHEAST FORESTRY UNIVERSITY 343
- SWISS KRONO TEC CH 304
- MAKITA CORPORATION 298
- DIEFFENBACHERMASCHINEN- UND ANLAGENBAU DE 296
- VAELINGE INNOVATION SE 287
- HUSQVARNA SE 282
Top Applicants (CPC)
Class B27,2013–2023, worldwide · Source: EPO PATSTAT
- ROBERT BOSCH DE 868
- NANJING FORESTRY UNIVERSITY 463
- HOMAG DE 437
- HUSQVARNA SE 360
- SWISS KRONO TEC CH 350
- MAKITA CORPORATION JP 319
- DIEFFENBACHERMASCHINEN- UND ANLAGENBAU DE 312
- VAELINGE INNOVATION SE 306
- ANDREAS STIHL & COMPANY DE 275
- FESTOOL DE 260