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Hydrogen Technologies Standards form the basic framework for market ramp-up
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IEC 49/726/NP	2005-05-27	Piezoelectric and dielectric devices for frequency control and selection - Measurement of quartz crystal unit parameters - Method for the determination of equivalent electrical parameters for GHz band More	Comment
IEC 49/715/NP	2005-02-18	Piezoelectric and dielectric devices for frequency control and selection - Glossary - Part 4-3: Materials for dielectric devices More	Comment
IEC 49/572/NP	2002-11-08	Piezoelectric and dielectric devices for frequency control and selection - Glossary - Part 4-3: Materials for dielectric devices More	Comment
IEC 49/519/DC	2001-08-31	Waveguide type dielectric resonators - Generic specification published by Cenelec More	Comment
IEC 49/520/DC	2001-08-31	Filters using waveguide type dielectric resonators - Generic specification published by Cenelec More	Comment
IEC 49/433/NP	1999-01-22	Proposal of the Japanese NC: Standard for the Test-fixture of Surface Mounting Quartz Crystal Units More	Comment
IEC 49/434/NP	1999-01-22	Proposal of the Japanese NC: Standard to the Test-fixture with load-capacitance of Surface Mounting Quartz Crystal Units More	Comment
IEC 49/428/NP	1998-09-25	Proposal of the Japanese NC: SAW materiels standardization More	Comment
IEC 49/430/NP	1998-09-25	Proposal of the Japanese NC: Guide to the use of waveguide type dielectric resonators More	Comment
DIN EN 123000	1997-06-10	Generic specification: Printed boards More	Comment

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