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US2092052A
|
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Cutting roll
|
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US2126872A
|
|
High temperature saturating or coating apparatus
|
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US1977046A
|
|
Method for making a plaster receiving base
|
|
US1777076A
|
|
Manufacture of expanded fibrous material
|
|
US1429226A
|
|
Plaster-receiving board
|
|
US1481255A
|
|
Transporting conduit for viscous substances and process of making the same
|
|
US1349663A
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Pipe-fitting
|
|
US1187716A
|
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Packing-machine.
|
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CA251355A
|
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Roofing product
|
|
CA255416A
|
|
Roofing machine
|
|
CA256458A
|
|
Apparatus for making roofing products
|
|
CA247599A
|
|
Process and apparatus for making corrugated boards
|
|
CA247598A
|
|
Method of and means for making plaster boards
|
|
CA251356A
|
|
Roofing machine
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