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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
CountryDescriptionCount
DK 1
XX 1
ATEarly Austria-Hungary patents6
AUAustralia14
BEBelgium Patents7
BRBrazil1
CACanada Patents2197
CHSwitzerland Patents28
DEGerman Patents177
DGGerman Gebrauchsmuster registration numbers, DRGM14
EPEuropean Patent8
ESSpain Patent5
FEFrench E series1
FIFinland Patent2
FRFrench Patents132
GBBritish Patents1665
ITItaly Patent5
LULuxembourg Patents1
NFNewfoundland (pre-1949 joining of Canada)40
NSNova Scotia Pre-Confederation113
SESwedish Patents10
XCEarly Canadian Patents315
ZASouth Africa Patents1
All Non US 4744


Special US Patents
CountryDescriptionCount
CSConfederate States of America Patents266
FXFractional X Patents91
NXX Patents that do not have numbers106
RXReissued X Patents38
XPre-1836 patents restored after patent office fire9755