- All sections
- H - Electricity
- H03F - Amplifiers
- H03F 1/13 - Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of attenuating means in discharge-tube amplifiers
Patent holdings for IPC class H03F 1/13
Total number of patents in this class: 0
10-year publication summary
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Principal owners for this class
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