Karl-Friedrich Etzold

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New York, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Piezoelectric transducer for recording video information
- Patent number 4,349,902
- Issue date Sep 14, 1982
- RCA Corporation
- John Valachovic
- G11 - INFORMATION STORAGE
Information Patent Grant
Visual display of ultrasonic radiation pattern
- Patent number 3,969,578
- Issue date Jul 13, 1976
- RCA Corporation
- Reuben Saul Mezrich
- G01 - MEASURING TESTING