David Wayne Hegdahl

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White Bear Lake, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Film structures and methods of making film structures
- Patent number 7,001,475
- Issue date Feb 21, 2006
- 3M Innovative Properties Company
- Ronald Wayne Ausen
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Micro-channeled protective film
- Patent number 6,686,026
- Issue date Feb 3, 2004
- 3M Innovative Properties Company
- Brian E. Spiewak
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Pneumatic tool having noise reducing muffling structure
- Patent number 5,418,339
- Issue date May 23, 1995
- Minnesota Mining and Manufacturing Company
- Gloria D. Bowen
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

Information Patent Application
Micro-channeled protective film
- Publication number 20030190458
- Publication date Oct 9, 2003
- 3M Innovative Properties Company
- Brian E. Spiewak
- B60 - VEHICLES IN GENERAL
Information Patent Application
Film structures and methods of making film structures
- Publication number 20030124291
- Publication date Jul 3, 2003
- 3M Innovative Properties Company
- Ronald Wayne Ausen
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE