Marlene M. Fritz

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Dallas, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Address display and alarm unit for alarm system
- Patent number D317942
- Issue date Jul 2, 1991
- Proto Quick, Inc.
- Marlene M. Fritz
- D20 - Sales and advertising equipment
Information Patent Grant
Audio-visual alarm system with address display
- Patent number 4,855,723
- Issue date Aug 8, 1989
- Proto Quick, Inc.
- Marlene M. Fritz
- G08 - SIGNALLING