Guardrails such as balcony balustrades

Guardrails such as balcony balustrades

United States Patent 3411752

US Patent References:
Joint-lock
- - 1376150

Joint lock
- - 1791680

Composite fence structure
- - 2066426

Railing structure
- - 2808233

Fence post with expansion joint
- - 2919113

Inventors:

Gerard, Bos Andre

Publication Date:

11/19/1968

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Primary Class:

256/22

Other Classes:

D25/38, D25/121, D25/44

International Classes:

E04F11/18

US Patent References:

Interlocking structure for fences or the like

Foreign References:

GB190415103A