- Sony Corporation


FIG. 1 is a top, front, and right-side perspective view of a headphone, showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left-side elevational view thereof, the right-side being a mirror image thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof.

Referenced Cited

U.S. Patent Documents

D297324 August 23, 1988 Kohno
D305541 January 16, 1990 Hirose
D310081 August 21, 1990 Daido et al.

Other references

  • Stereo Review; Dec. 1987; p. 77; top center--Nakamichi Model SP-7 Headphones. Crutchfield Cat.--Summer 1986; p. 89; top right--Model MDR-M77.

Patent History

Patent number: D319241
Type: Grant
Filed: Apr 14, 1989
Date of Patent: Aug 20, 1991
Assignee: Sony Corporation (Tokyo)
Inventors: Takefumi Daido (Tokyo), Akira Yamazaki (Niiza), Katsumi Yamatogi (Tokyo)
Primary Examiner: Theodore M. Shooman
Attorney: Lewis H. Eslinger
Application Number: 7/337,547


Current U.S. Class: Headphone Or Headset (D14/205)