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08/813,222 | 96093:
GROUNDWATER SAMPLING DEVICE WITH A LIFT CHECK VALUE
Public viewApplication #
08/813,222
Confirmation #
3187
Attorney Docket #
96093
Patent #
5,753,831
Issued - 05/19/1998
Filing or 371 (c) date
03/07/1997
Status
Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362 06/18/2002
Documents & transaction history
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