This flying robot vacuum overcomes the Roomba's biggest weakness: stairs - The Verge
A Novel Method for 3 D Absolute Localization and 3 Orientation of a Stair Cleaning Robot using Staircase 4 Geometry and Onboard Sensors 5 | Semantic Scholar
Table 2 from Avoidance of falling and collision for a stair-cleaning robot | Semantic Scholar
Dyson Patents Robot Vacuum That Can Climb Stairs
sTetro: A Modular Reconfigurable Staircase Cleaning Robot - YouTube
A stair robot cleaner - YouTube
Robot Vacuum For Stairs: 3 Concerns - Klinsmann
Alphabet's Two-Legged Robot Can Vacuum Your Stairs