US1707008A
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Beam
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US1511334A
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Bar spacer for concrete construction
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US1547169A
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Insert for concrete construction
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US1372226A
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Bar-spacer
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US1296513A
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Tie-piece for metallic reinforces.
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US1280725A
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Reinforcing-bar for concrete.
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US1169811A
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Reinforcing-bar for concrete.
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US1169810A
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Corner-bar.
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US1000519A
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Reinforcing means for concrete.
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US1151947A
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Reinforcing means for concrete.
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US1023149A
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Reinforcing means for composite structures.
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US872127A
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Reinforcing means for composite structures.
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