Julius A. Barthelme

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Woodsboro, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Teletypewriter line keyer with switching current regulator
- Patent number 4,355,403
- Issue date Oct 19, 1982
- Frederick Electronics Corporation
- John W. Spaniol
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
FSK Tone generator circuit
- Patent number 4,317,209
- Issue date Feb 23, 1982
- Frederick Electronics Corp.
- Julius A. Barthelme
- H04 - ELECTRIC COMMUNICATION TECHNIQUE