Trackball for computer

• US D326,261 S
• Filed: 03/08/1991
• Issued: 05/19/1992
• Est. Priority Date: 03/08/1991
• Status: Expired due to Term

• Current Assignee: Microsoft Corporation
• Original Assignee: Microsoft Corporation
• Inventors: Fulton, Elinor J., Bradley, Paul, Yurchenco, James R., Nelson, Michael D., Stephan, Allan H., Paull, Mike M., Garthwaite, Charlie, Ashmun, Stuart, Cameron, Bridget
• Primary Examiner(s): Burke, Wallace R.
• Assistant Examiner(s): Nunn, Freda S.
• Application Number:
  US07/666,397
• Time in Patent Office: 438 Days
• Field of Search: D14/100, D14/105, D14/106, D14/107, D14/114, D13/162, D13/168, D21/48, 74/471 XY, 178/18, 178/19, 200/5 A, 200/5 R, 200/6 A, 200/6 R, 273/148 B, 340/709, 340/710, 340/712, 235/472
• US Class Current: D14/417
• CPC Class Codes: N/A

Claims

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