Erik Danford Steffen

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Lee's Summit, MO, US

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Patents Applicationslast 30 patents

Information Patent Application
SYSTEM AND CONVERSION KIT FOR A BOAT TOWABLE FLOATING MAT
- Publication number 20230373598
- Publication date Nov 23, 2023
- Erik Danford Steffen
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Application
FLOTATION MAT EXTENSION, RETRACTION AND STORAGE APPARATUS
- Publication number 20230061387
- Publication date Mar 2, 2023
- Erik Danford Steffen
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING