Granted Patent
Utility
US 5,741,983 · App. 08/610,568
Soil sampler for analysis for fertilizer determination
Inventors:
Andrey V. Skotnikov, Vladimir Pisarchik, Gennady Valjushkevich
Patented Case
View Patent ↗
Granted: Apr 21, 1998
Filed: Mar 8, 1996
Inventors
Andrey V. Skotnikov
Vladimir Pisarchik
Gennady Valjushkevich
Assignee (at issue)
Iboco, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.