Fire Escape, Ladder, Or Scaffold Patents (Class 182)
- Wall-mounted platform, with ladder (Class 182/83)
- Embedded scaffold support member (Class 182/87)
- Retractable or collapsible beneath floor, track-mounted (Class 182/88)
- Spring-biased pivoted step or ladder (Class 182/89)
- Independent rung or step (Class 182/90)
- Ladder (Class 182/93)
- Single pole or strand (Class 182/100)
- Section extensible below prop pivot (Class 182/166)
- Coplanar extension with prop pivoted to lower section (Class 182/168)
- Single rear prop, pole type (Class 182/169)
- Rear prop, laterally moving (Class 182/170)
- Converging and contacting stiles or props (Class 182/171)
- Lateral prop (Class 182/172)
- Hinged to top-step rear flange (Class 182/173)
- Pivoted to top-step cleat (Class 182/174)
- Overlapping stile and prop (Class 182/177)
- Slidable nested single rung units (Class 182/195)
- Flexible (Class 182/196)
- Supporting surface compensating means (Class 182/200)
- With hook or grab (Class 182/206)
- Extension (Class 182/207)
- With spacer means (Class 182/214)
- Rung sandwiched between elements of composite stile (Class 182/215)
- Tie rod assembled (Class 182/216)
- With reinforcing means (Class 182/217)
- Independent support for rung (Class 182/220)
