wherein the shift keys are operated after the operation of the multifunction keys

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Patents Grantslast 30 patents

Information Patent Grant
Electronic apparatus and key operation control method
- Patent number 8,179,290
- Issue date May 15, 2012
- Kabushiki Kaisha Toshiba
- Hironori Motoe
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Keyboard with simultaneous operations
- Patent number 4,498,073
- Issue date Feb 5, 1985
- Charles B. Fisher
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
One-handed keyboard and its control means
- Patent number 4,042,777
- Issue date Aug 16, 1977
- International Business Machines Corporation
- Frank Charles Bequaert
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
3833765
- Patent number 3,833,765
- Issue date Sep 3, 1974
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
3623588
- Patent number 3,623,588
- Issue date Nov 30, 1971
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
3597600
- Patent number 3,597,600
- Issue date Aug 3, 1971
- G06 - COMPUTING CALCULATING COUNTING