The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 1998
Filed:
Oct. 04, 1996
Thomas Loughborough Gibson, Utica, MI (US);
Paul David Chalmer, Chelsea, MI (US);
Abdul Shaheed Abdul, Troy, MI (US);
National Center for Manufacturing Sciences, Ann Arbor, MI (US);
Abstract
An earth contamination site groundwater testing well having a borehole which passes though subsurface soil zones of interest is provided with a probe assembly that is installed in the borehole, that has a core stem which carries spaced-apart flexible disc seals that divide the borehole into different borehole zones that correspond to the subsurface soil zones of interest, and that includes microporous sampler points in the different borehole zones. The groundwater testing well borehole may be formed with a well casing that is afterwards removed while retaining the probe assembly in position.