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Electrical measuring instrument
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1950-05-23
Moving coil electrical measuring
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A novel bulk-glass optical current transducer having an adjustable multiring closed-optical-path
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1955-10-19
Improvements relating to polarity indicators for magnets
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1944-09-15
Electrical indicating instruments and scale adjustments therefor
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1959-03-18
Apparatus for testing a characteristic of ferromagnetic materials
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1928-01-31
Electrical indicating instrument and control system therefor
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Магнитный мост посто нного потока
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2018-07-20
一种结构紧凑、密封性能优异的智能电能计量箱
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1928-07-02
Improvements in or relating to electric measuring instruments
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A review of methods for coating-thickness determination
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1958-08-27
Improvements in or relating to multi-range electrical meters
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1947-08-11
Improvements relating to electromagnetic telephone instruments
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A sensitive balance for stability tests on permanent magnets
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1958-07-09
Improvements in electrical indicator instruments
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1960-02-17
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1943-07-19
Improvements in or relating to damping apparatus for electrical measuring instruments
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1956-09-12
Improvements in or relating to ring balances
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1930-07-29
Electric measuring instrument
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1952-10-29
Improvements in or relating to ratiometer type indicating instruments
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1949-08-19
Improvements in or relating to luxmeters
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1965-09-02
Improvements in or relating to electrical measuring instruments
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1963-05-29
Improvements in or relating to electrical measuring instruments