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US1298590A
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Electric-arc welding.
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US1057505A
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Sheet-metal casing for culverts, conduits, &c.
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US1057098A
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Sheet-metal casing for drainage culverts, conduits, screens, &c.
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US1049543A
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Corrugated sheet-metal sectional casing for culverts, drainage-casings, &c.
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US1049544A
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Sheet-metal casing for culverts, conduits, and drainage-tiling.
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US1049542A
|
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Corrugated metal casing for culverts, drainage-tiling, &c.
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US1055675A
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Process of making plates for well and drainage casings.
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US1105539A
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Draining culvert or casing.
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US1050244A
|
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Method of constructing and cementing wells.
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US1055674A
|
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Sheet-metal casing for drainage culverts, conduits, screens, wells, &c.
|
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US1027917A
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Process for making well-casing.
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US1028066A
|
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Process for making well-casing.
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US1062303A
|
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Drainage-casing.
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US1028065A
|
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Well-casing.
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