USPC Class Details

Description: 74 machine element or mechanism / 74 machine element or mechanism/(813r) rotary member or shaft indexing, e.g., tool or work turret (816) preselected indexed position (817) sequential (821) velocity control

Hierarchy/Derived subclasses

74 / 813r

-> 816

-> 817

-> 821

uspto searches

Patent Apps in 74/821

Granted Patents in 74/821

Use the links above or do an advanced search in ppubs for:
(74/821.ccls.)

This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find patents or patent applications in those subclasses.

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