Building units and construction elements – Stair – ladder – scaffold – or similar support – Element or attachment
Patent
1994-03-21
1995-12-19
Clark, Doris
Building units and construction elements
Stair, ladder, scaffold, or similar support
Element or attachment
Patent
active
D03654036
REFERENCES:
patent: 1963981 (1934-06-01), Carr et al.
patent: 4610432 (1986-09-01), Lenis et al.
patent: 5257794 (1993-11-01), Nakamura
patent: 5326337 (1994-07-01), Pardella
Drawing of 1 1/4".times.1 1/4" Nu-Rail Inside Corner Fitting No. 22 dated Aug. 17, 1976.
Clark Doris
The Hollaender Manufacturing Co.
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