# CN 213502637 U revision history

Append-only Arc G field-change log. Forward-only honesty: events accrue from Arc G adoption.

Patent: [CN 213502637 U](/patents/cn213502637-unitree-quadruped.md)

## Recorded posture

- First recorded event: 2021-06-22
- Last material change: 2021-06-22
- Material event count: 1
- Editorial event count: 0

## Material events (1)

- **2021-06-22**: created (source: https://patents.google.com/patent/CN213502637U/en) (verified)

## Forward-only note

Arc G is forward-only. The event log accrues from the Arc G adoption point. Fields with no events post-baseline equal the current cached value and are not independently verified at any prior date.

_Canonical URL: /patents/cn213502637-unitree-quadruped/history. HTML: [/patents/cn213502637-unitree-quadruped/history](/patents/cn213502637-unitree-quadruped/history)._