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Ultra Span - a division of Alphair Ventilating Systems Inc. Patents
Ultra Span - a division of Alphair Ventilating Systems Inc.
Winnipeg, CA
No. of patents:

Patent Number Title Of Patent Date Issued
4968236 Auxiliary auger assembly for hollow core slab production November 6, 1990
Auxiliary or stub augers are used in conjunction with a convention auger machine that is used to form reinforced hollow cored slabs. They can be used to ensure consolidation of concrete above the cores particularly and relatively in large diameter slabs or can be substituted for one or m

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