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The patent
data base contains about 4,000 patent applications for
variable valve timing. All patent categories of interest
since such patent applications first began top appear
in or about the year 1870 have been examined and those
concerning variable valve timing have been recorded.
The data base therefore contains all relevant DE, EP,
US and PCT applications and those from many other European
countries. Every effort has been made to cover all these
sources without exception. The aim is to make all applications
available as .pdf-format files and to offer various
services using the contents of the data base as a starting
point. |
Specimen
data sets:
DE_19529277
(PDF-Format)
DE_19914156
(PDF-Format)
EP_00761936
(PDF-Format)
US_05671706
(PDF-Format)
US_05495831
(PDF-Format)
US_05797361
(PDF-Format)
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