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Publication numberUSD253289 S
Publication typeGrant
Application numberUS 05/811,359
Publication dateOct 30, 1979
Filing dateJun 29, 1977
Priority dateFeb 24, 1977
Publication number05811359, 811359, US D253289 S, US D253289S, US-S-D253289, USD253289 S, USD253289S
InventorsAkira Kato
Original AssigneeSansui Electric Co., Ltd.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Control knob for audio apparatus
US D253289 S
Abstract  available in
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  1. The ornamental design for a control knob for audio apparatus, as shown and described.

FIG. 1 is front view of a control knob for audio apparatus showing my new design;

FIG. 2 is a left side elevational view;

FIG. 3 is a right side elevational view;

FIG. 4 is a top plan view;

FIG. 5 is a bottom plan view; and

FIG. 6 is a top, front and right side perspective view thereof.

FIG. 7 is a front and bottom perspective view; and

FIG. 8 is an enlarged front and partial top perspective view.

The characteristic features of my design are the configuration of the front groove and the texture of the outer-most band.

Non-Patent Citations
1Evans 1976 cat., c 1975, p. 29x, item "C".
2Heathkit Spring 1976 cat., c 1976, p. 34, item #"AA-18", "Volume" & "Tone" Knobs.
3Stereo Review, 6-76, p. 29, Mida Receiver, top right corner knob.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
USD668928 *Oct 16, 2012Whirlpool CorporationAppliance knob
USD754637 *Dec 22, 2014Apr 26, 2016Plantronics, Inc.Headset adapter and audio controller
U.S. ClassificationD14/217, D14/265, D14/261, D08/312