B Optical

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St. Petersburg, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
Fresnel lens projection system with high gain screen
- Patent number 4,457,594
- Issue date Jul 3, 1984
- B Optical
- Marvin P. Hodges
- G02 - OPTICS
Information Patent Grant
Fresnel lens system
- Patent number 4,398,810
- Issue date Aug 16, 1983
- B Optical
- Marvin P. Hodges
- G02 - OPTICS