Finding older patents and trademarks
Patents
Patents produced before 1976 can be tricky to find. If
you have the patent number, or are searching for all the
patents produced with a specific classification number,
you can do this on the USPTO
web site.
- Click on "Quick Search" in the green Issued Patents box.
- Add your search terms and change the appropriate Field index to select "Patent Number" or "Current U.S. Classification
Code", depending on which field you are searching.
More likely, you are looking for a specific patent without
knowing either the patent number or the current classification
code or the patent number. You might, for instance, know
the inventor's name, or the name of the invention. In this
case, you will need to consult the following print indexes
at the D.H. Hill Library:
Printed Indexes
Printed Weekly Announcement Journals
Trademarks
Since the TESS Database on the USPTO web site only contains
marks that are either currently registered or subject of
a pending application, it is often necessary to search other
resources to find older trademarks. You will need to visit
the D. H. Hill Library to do so.
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to the D.H.Hill Library
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