David E. Helgerson

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Plymouth, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Slip roller conveyor
- Patent number 7,748,520
- Issue date Jul 6, 2010
- Activar Technical Products Group, Inc.
- David E. Helgerson
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Long roller slip conveyor
- Patent number 7,503,450
- Issue date Mar 17, 2009
- Magstar Technologies, Inc.
- David E. Helgerson
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Conveyor assembly
- Patent number 7,175,018
- Issue date Feb 13, 2007
- Magstar Technologies, Inc.
- David E. Helgerson
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Conveyor assembly
- Patent number 6,959,804
- Issue date Nov 1, 2005
- Magstar Technologies, Inc.
- David E. Helgerson
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Conveyors
- Patent number 5,558,205
- Issue date Sep 24, 1996
- Quickdraw Design and Drafting, Inc.
- David E. Helgerson
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Conveyor technology
- Patent number 5,558,206
- Issue date Sep 24, 1996
- Quickdraw Design and Drafting, Inc.
- David E. Helgerson
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents

Information Patent Application
ADJUSTABLE TRAY STACKER/DESTACKER ASSEMBLY
- Publication number 20240367925
- Publication date Nov 7, 2024
- Automation, Inc.
- David E. Helgerson
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Application
LONG ROLLER SLIP CONVEYOR
- Publication number 20090045035
- Publication date Feb 19, 2009
- MAGSTAR TECHNOLOGIES, INC.
- David E. Helgerson
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Application
Conveyor assembly
- Publication number 20060016668
- Publication date Jan 26, 2006
- MAGSTAR TECHNOLOGIES, INC.
- David E. Helgerson
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Application
Conveyor assembly
- Publication number 20040016626
- Publication date Jan 29, 2004
- MAGSTAR TECHNOLOGIES, INC.
- David E. Helgerson
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL