Patents and Patent Citation Searching
2005 ◽
Vol 14
(5)
◽
pp. 417-433
◽
Keyword(s):
2019 ◽
Vol 521
◽
pp. 476-483
◽
Keyword(s):
2017 ◽
Vol 25
(8)
◽
pp. 809-831
◽
2004 ◽
Vol 35
(1)
◽
pp. 93-112
◽