Patent classifications
G
PHYSICS
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G01
MEASURING; TESTING
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G01M
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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3/00
Investigating fluid-tightness of structures
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G01M3/02
by using fluid or vacuum
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G01M3/04
by detecting the presence of fluid at the leakage point
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G01M3/06
by observing bubbles in a liquid pool
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G01M3/08
for pipes, cables or tubes; for pipe joints or seals; for valves;; for welds
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