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1904-01-15
Device for measuring the speed of moving bodies by electrical means
CH446E
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1904-01-15
Device for measuring the speed of moving bodies by electrical means
CH444E
(en )
1904-01-15
Device for measuring the speed of moving bodies by electrical means
CH445E
(en )
1904-01-15
Device for measuring the speed of moving bodies by electrical means
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Improvements to measuring devices
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1907-09-20
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FR5259E
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Improvements to measuring instruments
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1904-01-11
Improvements to measuring instruments
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Field measuring instrument useful for leveling
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Precision compass