Computer trackball

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Information

Patent Grant
D347628

References
Source

Patent Number
D347,628
Date Filed
Wednesday, December 23, 1992
32 years ago
Date Issued
Tuesday, June 7, 1994
30 years ago

Inventors
Original Assignees
- Microsoft Corporation
Examiners
- Burke; Wallace R.
- Tung; M. H.
Agents
- Seed and Berry

US Classifications
- D14 - Recording, communication, or information retrieval equipment
Field of Search
- US
- 178 18-19
- 200 5 R
- 200 5 A
- 200 6 R
- 200 6 A
- 213 148 B
- 273 148 B
- 340 707
- 340 709-710
- 074 471
- D14 100
- D14 114
- D13 158
- D21 48
- Term of Grant
  14Years

Information

Abstract

Description

Claims

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

US Referenced Citations (3)

Number	Name	Date	Kind
D326261	Ashmun et al.	May 1992
D328458	Barry	Aug 1992
4952919	Nippoldt	Aug 1990

Divisions (1)

	Number	Date	Country
Parent	665840	Mar 1991

Continuation in Parts (1)

	Number	Date	Country
Parent	598562	Oct 1990