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57,515 · Johnson · "Improvement in Vault-Lights" · Drawing
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57,515: 3 of 3

Figs. 2 and 3
First: 8,058X · Rockwell · "Vault Light" · Drawing Last: 397,371 · Deutsche Glasbau-Gesellschaft · "Improvements in Moulds for use in the Construction of Floor Slabs, Wall Panels, Pavement Lights, Windows and the like of Glass Framed in Ferroconcrete" · Drawing Prev: 38,788 · McCormick · "Improvement in Mode of Ventilating and Illuminating Risers" · Drawing Next: 58,240 · Fitzgerald · "Improved Vault-Cover" · Drawing Navigation
Drawings: 33 of 647
57,515 · Johnson · Improvement in Vault-Lights