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DE1042040B
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Device for holding a piezoelectric oscillating crystal and tool for introducing the oscillating crystal into the holding device
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GB766033A
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Improvements in or relating to piezo-electric crystals
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US2705760A
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Crystal mounting means
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US2677064A
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Piezoelectric crystal and holder
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US2513870A
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Hermetically sealed crystal
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US2508232A
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Holder for piezoelectric oscillators
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US2497966A
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Crystal holder
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US2484004A
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Crystal holder
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US2451877A
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Method of manufacturing oscillator plates
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US2456795A
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Cathode sputtering apparatus for coating oscillator plates
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Quartz oscillator plate
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US2488781A
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Crystal holder
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US2482451A
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Piezoelectric crystal holder
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US2425481A
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Quartz oscillator plateholder
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CA524871A
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Crystal mounting means
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