Safety devices not otherwise provided for (safety devices in general F16P); Breaker blocks; Devices for freeing jammed rolls

Introduced: September 1968

Title

Titles differ between systems:

IPC: Safety devices not otherwise provided for; Breaker blocks; Devices for freeing jammed rolls

CPC: Safety devices not otherwise provided for (safety devices in general F16P); Breaker blocks; Devices for freeing jammed rolls

Full titles differ between systems:

IPC:

Safety devices not otherwise provided for; Breaker blocks; Devices for freeing jammed rolls

CPC:

Safety devices not otherwise provided for (safety devices in general F16P); Breaker blocks; Devices for freeing jammed rolls

Of 2 combined children, 1 exist in both systems.

1 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.

IPC defines codes here since 1974.

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B21B 2033/005 2nd only CPC only CPC only
B21B 33/02 Preventing fracture of rolls since 1974 IPC+CPC Available in IPC and CPC

Class B21,2013–2023, worldwide · Source: EPO PATSTAT

Class B21,2013–2023, worldwide · Source: EPO PATSTAT