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Mark Name Description Status
BARNSTEAD BARNSTEAD Filed on: 4/11/2016

Meters for measuring conductivity and other variables in connection with water purification processes, for use in laboratories; Sterilizing filters for laboratory use; Electronic monitor for determining the total organic carbon content in water

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CONTINUED USE AND INCONTESTIBILITY ACCEPTED 6/3/2023
BARNSTEAD BARNSTEAD Filed on: 5/18/1951

LABORATORY STERILIZERS AND AUTOCLAVES FOR STERILIZING SURGICAL AND DENTAL INSTRUMENTS, GLASSWARE, UTENSILS, SPECIMENS, SOLUTIONS, AND AMPOULES

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CONTINUED USE NOT FILED WITHIN GRACE PERIOD, UN-REVIVABLE 4/1/2016
BARNSTEAD BARNSTEAD Filed on: 1/7/1948

ELECTRICAL LABORATORY APPARATUS-NAMELY, WATER BATHS, WATER BOILERS, AND PURITY METERS FOR TESTING DISTILLED WATER

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EXPIRED 9/2/2001
BARNSTEAD BARNSTEAD Filed on: 1/7/1948

WATER DEMINERALIZING APPARATUS OF THE FILTER TYPE AND DEMINERALIZING RENEWAL CARTRIDGES FOR USE THEREIN

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EXPIRED 6/12/2010
BARNSTEAD BARNSTEAD Filed on: 11/16/1921

WATER STILLS * FOR LABORATORY AND OTHER SMALL SCALE USE *

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REGISTERED AND RENEWED 9/16/2022
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