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1971-05-12 |
1973-09-25 |
Godwin Warren Engin Ltd |
Proximity switches
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1971-06-01 |
1974-10-08 |
Texas Instruments Inc |
Pushbutton keyboard system
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1971-06-01 |
1974-04-30 |
Texas Instruments Inc |
Pushbutton keyboard system
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1971-08-23 |
1982-02-02 |
Hewlett-Packard Company |
Keyboard having switches with tactile feedback
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1971-08-30 |
1973-08-07 |
Colorado Instr Inc |
Snap action capacitive type switch
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1972-04-19 |
1973-07-31 |
Colorado Instr Inc |
Keyboard switch assembly with improved hermetically sealed diaphragm contact structure
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1972-04-24 |
1973-11-06 |
Opsonar Organ Corp |
Electronic musical instrument keying assembly providing a minimum of electrical noise
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1972-08-18 |
1975-08-05 |
Matsushita Electric Industrial Co Ltd |
Push button switch with elastic conductive sheet
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1972-10-05 |
1973-12-11 |
J Shuman |
Enuresis bed pad
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1973-01-02 |
1982-05-04 |
Bowmar Instrument Corporation |
Calculator keyboard switch with disc spring contact and printed circuit board
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1973-10-29 |
1975-01-14 |
Chomerics Inc |
Keyboard switch assembly with dome shaped actuator having associated underlying contactor means
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1973-10-31 |
1975-04-22 |
Essex International Inc |
Tactile keyboard switch assembly with metallic or elastomeric type conductive contacts on diaphragm support
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JPS50110318A
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JPS50113777A
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1974-02-22 |
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1974-07-03 |
1975-10-28 |
Hewlett Packard Co |
Keyboard type switch with rocker type key actuator
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*
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1974-09-23 |
1976-03-30 |
Xerox Corporation |
Arch shaped snap-type switch contact
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1974-09-23 |
1976-07-13 |
Xerox Corporation |
Sequential switching assembly having plural, spaced flexible contact layers
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1974-11-29 |
1977-01-25 |
Texas Instruments Incorporated |
Pushbutton keyboard switch assembly having individual concave-convex contacts integrally attached to conductor strips
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1975-01-07 |
1976-11-23 |
The Bendix Corporation |
Pressure variable capacitor
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1975-04-03 |
1976-10-26 |
Magic Dot, Inc. |
Membrane keyboard apparatus having common apertured electrode, aperture inserted electrodes and conductive bubble contactors
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1975-05-12 |
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Method of making keyboard assemblies
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1975-06-19 |
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JPS574350Y2
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1976-04-20 |
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DE2739137C2
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1977-08-31 |
1983-07-14 |
Braun Ag, 6000 Frankfurt |
Gehäuse für von Hand gehaltene Geräte
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1977-10-13 |
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Sheldahl, Inc. |
Tactile touch switch panel
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1979-02-12 |
1980-04-08 |
Parker Brothers |
Touch-responsive indicator switch
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1980-03-26 |
1984-07-26 |
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Tastatur
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1980-06-23 |
1982-02-02 |
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1980-07-24 |
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1980-10-03 |
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1980-10-03 |
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1980-10-03 |
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Illuminated industrial membrane switch
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1980-11-06 |
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1983-12-27 |
The Hall Company |
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Canon Kabushiki Kaisha |
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1983-05-26 |
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1989-03-23 |
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Hewlett-Packard Company |
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Bedieneinrichtung mit einem kapazitiven Sensorelement und Elektrogerät mit einer solchen Bedieneinrichtung
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2004-02-02 |
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Tactotek Oy |
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Apem |
Clavier capacitif
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