Input device featuring both trackball and mouse capability
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| Country | US |
|---|---|
| Patent number | 4562347 |
| Issued on | 31 December 1985 |
| Inventor |
Dean A. Hovey Douglas R. Grundstrom James R. Yurchenco |
| Assignee | Trace Systems, Inc. |
| Reference | US4562347 |
Input device featuring both trackball and mouse capability is a sphere supported in a housing with top and bottom apertures with two encoders that resolve the x-coordinate and y-coordinate values and convert the signals to the computer, so it can be used as a mouse or as a trackball. The invention was granted its patent number 4562347 on 1985. [1]
Description
Input device featuring both trackball and mouse capability
- Inventor: Dean A. Hovey
- Inventor: Douglas R. Grundstrom
- Inventor: James R. Yurchenco
- Patent number: 4562347
- Filing date: 23 September 1983
- Issue date: 31 December 1985
- Assigned to Trace Systems, Inc.
Cited patents
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- US 3987685, "Cursor position device", issued Oct 26, 1976, assigned to Xerox Corporation
Referenced by
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- US 7322011, "System and method of adjusting display characteristics of a displayable data file using an ergonomic computer input device", issued Jan 22, 2008, assigned to Microsoft Corporation
- US 7398089, "Data-capable network prioritization with reduced delays in data service", issued Jul 8, 2008
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- US D377485, "Pointing device", issued Jan 21, 1997, assigned to Microsoft Corporation
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- US D399499, "Pointing device", issued Oct 13, 1998, assigned to Microsoft Corporation
- US D595717, "Combination overlay and pointing device cover", issued Jul 7, 2009
- US D649995, "Magnifier", issued Dec 6, 2011, assigned to Eschenbach Optik GmbH
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- US RE43523E, "Data-capable network prioritization with reduced delays in data service", issued Jul 17, 2012, assigned to Research In Motion Limited
Images
References
- ↑ US patent 4562347, Dean A. Hovey; Douglas R. Grundstrom; James R. Yurchenco, "Input device featuring both trackball and mouse capability", issued 31 December 1985
