Keith M. Polzin

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Sioux Falls, SD, US

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Patents Grantslast 30 patents

Information Patent Grant
Granular material storage capacity increasing device and system
- Patent number 8,959,846
- Issue date Feb 24, 2015
- Keith Polzin
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Zero ground disturbance system
- Patent number 6,854,926
- Issue date Feb 15, 2005
- Sioux Steel Company
- Donald J. Siglin
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Hydrostatic drive and steering system for a utility vehicle
- Patent number 6,305,486
- Issue date Oct 23, 2001
- Koyker Manufacturing Company
- Keith M. Polzin
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Wall-mounted foldable work bench
- Patent number D295007
- Issue date Apr 5, 1988
- Sioux Steel Company
- Robert E. Hardy
- D06 - Furnishings

Patents Applicationslast 30 patents

Information Patent Application
GRANULAR MATERIAL STORAGE CAPACITY INCREASING DEVICE AND SYSTEM
- Publication number 20130291458
- Publication date Nov 7, 2013
- Keith Polzin
- E04 - BUILDING
Information Patent Application
Zero ground disturbance system
- Publication number 20040120769
- Publication date Jun 24, 2004
- Donald J. Siglin
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL