WHIRL-AIR-FLOW CORPORATION

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BIG LAKE, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for cleaning contaminated soil
- Patent number 4,576,572
- Issue date Mar 18, 1986
- Whirl-Air-Flow Corporation
- Edward E. Mueller
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
Apparatus and method for calcining sand
- Patent number 4,518,350
- Issue date May 21, 1985
- Whirl-Air-Flow Corporation
- Edward E. Mueller
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
Bag opening and emptying apparatus
- Patent number 4,278,383
- Issue date Jul 14, 1981
- Whirl-Air-Flow Corporation
- Edward E. Mueller
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Bag opening and emptying apparatus
- Patent number 4,274,787
- Issue date Jun 23, 1981
- Whirl-Air-Flow Corporation
- Edward E. Mueller
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Method and apparatus for reclaiming sand
- Patent number 4,050,635
- Issue date Sep 27, 1977
- Whirl-Air-Flow Corporation
- Edward E. Mueller
- B22 - CASTING POWDER METALLURGY

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
72295692 - WHIRL-AIR-FLOW
- Serial number 72295692
- Registration number 881658
- Filing date Apr 15, 1968
- WHIRL-AIR-FLOW CORPORATION
- 1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information Trademark
72236535 - WHIRL-AIR-FLOW
- Serial number 72236535
- Registration number 833282
- Filing date Dec 16, 1965
- WHIRL-AIR-FLOW CORPORATION
- 7 - Machines and machine tools