patents
The search-result page is a collection of iframes showing the data from these search engines:
USPTO
-
Canadian IPO
-
freepatentsonline
-
espacenet
The list of search engines is maintained by
Liebel-lab
Search Portal
The other specific harvesters:
/harvester42
The harvester42 is a general purpose search engine collection
/news
The news server
/chemical
will collect chemical-related search engines
/science
is a science-specific search engine collection
/products
Harvester for products
/literature
Harvester for scientific literature.
/jobs
Harvester for scientific jobs