Trackball

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Information

Patent Grant
D289306

References
Source

Patent Number
D289,306
Date Filed
Friday, November 16, 1984
41 years ago
Date Issued
Tuesday, April 14, 1987
39 years ago

Inventors
- Philip J. Burnstein
- Syng N. Kim
Original Assignees
- Wico Distribution Company, L.P.
Examiners
- Feifer; Melvin B.
Agents
- Emrich & Dithmar

US Classifications
Field of Search
- US
- D21 48
- D14 114
- D13 32
- 273 DIG 28
- 273 148 B
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a trackball, as shown and described.

US Referenced Citations (2)

Number	Name	Date	Kind
4538476	Luque	Sep 1985
4612539	Hosogoe et al.	Sep 1986

Non-Patent Literature Citations (1)

Entry
Computer Design, Jun. 1980, p. 21, upper right, Trackball.