Constant distortion volume control unit

Description

FIG. 1 is a front perspective view of a constant distortion volume control unit, showing my new design;

FIG. 2 is a front elevation of the unit;

FIG. 3 is a left side elevation of the unit as seen from the left of FIG. 2;

FIG. 4 is a rear elevation of the unit;

FIG. 5 is a top plan view of the unit; and

FIG. 6 is a bottom plan view of the unit.

Referenced Cited
U.S. Patent Documents
D159458 July 1950 Zapolski
D168614 January 1953 Floria
D199677 December 1964 Mattingly
D211092 May 1968 Kahn
D228922 October 1973 Pruyne
D244214 May 3, 1977 Ross
D244215 May 3, 1977 Ross
Other references
  • Allied Electronics for Everyone, 1968, P. 185, Talk-A-Phone, item No. #12B8054-X.
Patent History
Patent number: D256798
Type: Grant
Filed: Mar 3, 1978
Date of Patent: Sep 9, 1980
Inventor: Donald T. Scholz (Wayland, MA)
Primary Examiner: Bernard Ansher
Attorney: Arthur Z. Bookstein
Application Number: 5/883,350
Classifications
Current U.S. Class: D14/96; D14/92
International Classification: D1499;