Example of Proper Usage:

'US Patent 20210349542 Target selection based on human gestures' → 'Patent Publication Code' → 'A1' is correct, The Patent Publication Code indicates the kind of publication, such as a republication or a corrected publication, and is found following the Pub. No. on the patent document. Citation: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20210349542.

Example of Improper Usage:

'US Patent 20210349542 Target selection based on human gestures' → 'Patent Publication Code' → 'G06F 3/017' is incorrect because it is the CPC, which is a different code associated with the patent. Citation: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20210349542.