Volume adjustment knob for power microphone

Details Volume adjustment knob for power microphone Volume adjustment knob for power microphone

1978-01-30

1980-08-26

Rosen, Sam

Tools and hardware

Handle, knob or pull

Singular point of attachment

D0806

Patent

active

D02565498

REFERENCES:
patent: D181065 (1957-09-01), Middlemark
patent: 2720176 (1955-10-01), Babbitt

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