Sherif Danish

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Tulsa, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Entry of alphabetical characters into a telephone system using a co...
- Patent number 5,392,338
- Issue date Feb 21, 1995
- Danish International, Inc.
- Adel Danish
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Telephone keypad matrix
- Patent number 5,339,358
- Issue date Aug 16, 1994
- Danish International, Inc.
- Adel Danish
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method for replacing keyboard data using single step process mode
- Patent number 5,121,472
- Issue date Jun 9, 1992
- Polytel Computer Products Corporation
- Sherif Danish
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Capacitive multikey keyboard for inputting data into a computer
- Patent number 4,616,213
- Issue date Oct 7, 1986
- Polytel Corporation
- Sherif Danish
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Matrix keyboard
- Patent number 4,567,469
- Issue date Jan 28, 1986
- Polytel Corp.
- Sherif Danish
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Multikey keyboard for inputting data into a computer
- Patent number 4,555,693
- Issue date Nov 26, 1985
- Polytel Corp.
- Sherif Danish
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Matrix keyboard with plurality of sequences of cascaded electrical...
- Patent number 4,532,497
- Issue date Jul 30, 1985
- Polytel Corp.
- Sherif Danish
- H03 - BASIC ELECTRONIC CIRCUITRY