Frederick P. Edgar

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Rochester, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Replaceable, self-contained expanded viewing light shield cartridge...
- Patent number 6,557,174
- Issue date May 6, 2003
- Optical Engineering Company, LLC
- Edward L. Martin
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Safety helmet
- Patent number D443394
- Issue date Jun 5, 2001
- Optical Engineering Company, LLC
- Edward L. Martin
- D29 - Equipment for safety, protection, and rescue

Patents Applicationslast 30 patents

Information Patent Application
Replaceable, self-contained expanded viewing light shield cartridge...
- Publication number 20020024739
- Publication date Feb 28, 2002
- Edward L. Martin
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC