# US 9,773,413 B1 revision history

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

Patent: [US 9,773,413 B1](/patents/us9773413-knightscope-autonomous-parking-monitor.md)

## Recorded posture

- First recorded event: 2017-09-26
- Last material change: 2017-09-26
- Material event count: 1
- Editorial event count: 0

## Material events (1)

- **2017-09-26**: created (source: https://patents.google.com/patent/US9773413B1/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.

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