Helmer Swenholt

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FAlls Church, VA, US

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Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR TREATMENT OF IMPOTABLE WATER
- Publication number 20080277263
- Publication date Nov 13, 2008
- Helmer C. SWENHOLT
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Printer output calibration system
- Publication number 20020101598
- Publication date Aug 1, 2002
- Helmer Swenholt
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS