- Patent
- 203517: Improvement in Fire-Escape Ladders
- Issue date
- 1878-05-07
- Place
- Chambersburg, Pennsylvania
- Record strength
- Patent-record facts are attached, but name/OCR and identity evidence remain under review.
- Identity evidence
- Identity and name/OCR review pending before public-rank promotion.
- Sprint priority
- 2 / not final rank
- Chronology caution
- Chronology gap candidate status is not final chronological holder rank. CultureUp may revise holder rank only after source-led sequence review.
- Cluster
- Public safety and infrastructure
- Identity caution
- Name/OCR and identity-source reconciliation required.
- Needed before promotion
- Name/OCR reconciliation, identity evidence, and public-rank review.
- Why this record matters
- The patent row strengthens the fire-safety and escape-technology bridge in the 1875-1899 gap.