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1. |
How Crystal Watch Works
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Impartial description describes how quartz crystals, quartz watches and quartz clocks work.
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2. |
Pletronics, Inc.
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Manufacturer of crystals (for microprocessors and communication equipment), crystal filters, and crystal oscillators (clock oscillators, VCXO, TCXO, and TCVCXO).
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4. |
OMIG S.A.
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Manufacturer of quartz filters and quartz crystals for TCXOs, VCXOs, and OCXOs, and vacuum depositing process control quartz crystals. Site in English and Polish, and include product specification ranges and PDF part catalogs.
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5. |
Abracon
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Manufacture of crystals and inductive products
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