Alphair Ventilating Systems Inc.

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Winnipeg, CA

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for controlling density profile in a concrete extruded slab
- Patent number 5,238,374
- Issue date Aug 24, 1993
- Ultra Span, a Division of Alphair Ventilating Systems, Inc.
- Ernst Martens
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Auxiliary auger assembly for hollow core slab production
- Patent number 4,968,236
- Issue date Nov 6, 1990
- Ultra Span - a division of Alphair Ventilating Systems Inc.
- Ernest Martens
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Auger construction for machines for forming hollow core concrete slabs
- Patent number 4,710,112
- Issue date Dec 1, 1987
- Alphair Ventilating Systems Inc.
- Ernst Martens
- B28 - WORKING CEMENT, CLAY, OR STONE

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Trademarklast 30 trademarks

Information Trademark
85671799 - ALPHAIR
- Serial number 85671799
- Registration number 4697917
- Filing date Jul 9, 2012
- Alphair Ventilating Systems, Inc.
- 7 - Machines and machine tools
Information Trademark
75530064 - JETSTREAM
- Serial number 75530064
- Registration number 2503394
- Filing date Aug 3, 1998
- Alphair Ventilating Systems Inc.
- 11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes