Building units and construction elements – Stair – ladder – scaffold – or similar support – Scaffold
Patent
1994-03-21
1995-10-03
Clark, Doris
Building units and construction elements
Stair, ladder, scaffold, or similar support
Scaffold
Patent
active
D03629163
REFERENCES:
patent: D250283 (1978-11-01), Norton
patent: 1963981 (1934-06-01), Garrett
patent: 3923218 (1975-12-01), Niemann
patent: 4915535 (1990-04-01), Willetts
Drawing of 11/4".times.11/4" NU-Rail Inside Corner Fitting No. 22 dated Aug 17, 1976.
Clark Doris
The Hollaender Manufacturing Co.
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