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1987-09-16
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1986-05-16
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1985-09-18
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1984-05-31
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1980-05-22
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1984-03-16
IMPROVEMENTS IN DETECTORS OF THE LEVEL OF A LIQUID CONTAINED IN A TANK.
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1987-05-06
LIQUID LEVEL ELECTRIC SIGNAL TRANSMITTER DEVICE IN TANKS
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1988-11-25
LEVEL INDICATOR OF A LIQUID IN A TANK
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1984-04-17
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1982-10-28
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1985-02-01
IMPROVEMENTS IN A DEVICE TO PROVIDE VISUAL INDICATION OF THE LEVEL OF LIQUID WITHIN A CONTAINER
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1985-06-10
LIQUID LEVEL INDICATOR CONTAINED IN A TANK
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1985-06-01
PROCEDURE FOR THE MANUFACTURE OF LEVEL PROBES FROM A LIQUID CONTAINED IN A TANK
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1983-01-20
DIELECTRIC LIQUID LEVEL INDICATOR IN A TANK
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1986-05-30
DEVICE FOR DETECTING THE LEVEL OF A LIQUID IN A TANK
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1984-12-28
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1987-04-15
DEVICE FOR CHECKING THE LEVEL OF A LIQUID IN A TANK
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1985-08-31
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1984-06-01
IMPROVEMENTS IN DETECTION DEVICES OF THE LEVEL OF A LIQUID
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1982-12-23
DEVICE FOR DETECTING THE LEVEL OF A LIQUID IN A TANK
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1986-11-26
DEVICE FOR MEASURING THE LEVEL OF A LIQUID IN A TANK
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1982-12-23
LEVEL DETECTOR DEVICE OF A LIQUID IN A TANK
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1993-02-22
DISTANCE INDICATOR OF THE LEVEL OF A LIQUID IN A TANK.
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1989-12-01
DETECTOR OF THE LEVEL OF A LIQUID IN A TANK.
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1986-03-28
DEVICE FOR MEASURING THE LEVEL OF A LIQUID IN A TANK