David P. Hanefeld

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Northridge, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Self-adhesive stamp construction
- Patent number 6,394,499
- Issue date May 28, 2002
- Unicover Corporation
- David P. Hanefeld
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Grant
Storage and display device for coins and the like
- Patent number 5,191,972
- Issue date Mar 9, 1993
- Unicover Corporation
- James A. Helzer
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents

Information Patent Application
Self-adhesive stamp construction
- Publication number 20020185856
- Publication date Dec 12, 2002
- Unicover Corporation
- David P. Hanefeld
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...