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The links to the left offer advanced searches of the Datamp database as well as screens to help find patents not currently in the Datamp database. The ccl search and Toggle Display mode are intended to help users searching for patents not currently in Datamp. The ccl is the Current US Classification used by the US Patent Office. If you toggle the display mode any of the searches in the tool bar above will display the ccl's that match the search criteria. A page on using tool classifications to search for patents not in Datamp can be found here.

Non US Patents
AU 1
ATEarly Austria-Hungary patents3
BEBelgium Patents1
CACanadian Patents1516
CHSwiss Patents5
DEGerman Patents23
EPEuropean Patent2
FEFrench E series1
FRFrench Patents38
GBBritish Patents956
LULuxemburg Patent1
NFNewfoundland (pre-1949 joining of Canada)40
NSNova Scotia Pre-Confederation113
SESwedish Patents10
XCEarly Canadian Patents315
ZASouth Africa1
All Non US 3028

Special US Patents
CSConfederate States of America Patents266
FXFractional X Patents90
NXX Patents that do not have numbers78
RXReissued X Patents40
XPre-1836 patents restored after patent office fire9755