Stairway-building system

Details Stairway-building system Stairway-building system

1982-10-25

1984-08-14

Friedman, Carl D.

Static structures (e.g., buildings)

Stepped; e.g., stair

Tread unit on horizontal tread member connected to riser

52191, EO4F 1100

Patent

active

044648707

ABSTRACT:
A stairway construction system is provided utilizing modular tread/riser stair step units and two or more notchless stringers.

REFERENCES:
patent: 2021457 (1935-11-01), MacKenzie
patent: 2696027 (1954-12-01), Ryland
patent: 3564793 (1971-02-01), Willfurth
patent: 3909997 (1975-10-01), Eickhof
patent: 4154032 (1979-05-01), Strub

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