Combination lock (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Combination lock" in English language version.

refsWebsite

Global rank English rank

5patents.google.com

1,182^nd place

725^th place

2web.archive.org

1^st place

1^st place

1docs.google.com

1,047^th place

1,015^th place

1zamki-garant.ru

low place

low place

low place

low place

low place

low place

237^th place

170^th place

docs.google.com

"US948280.pdf" (PDF). docs.google.com. Retrieved 15 April 2017.

kaba-mas.com

"Kaba-MAS X-09 and CDX-09 High Security Locks" (PDF). December 2010. p. 8.

navy.mil

portal.navfac.navy.mil

"Operating Instruction for the X-09 Type 1F High Security Electronic Lock" (PDF). December 2010. Archived from the original (PDF) on 28 July 2011.

patents.google.com

Permutation padlock. Found in Google Books. [1]
Improvement in permutation padlocks Google Books.[2]
"IMPROVEMENT IN TUMBLERS FOR PERMUTATION-LOCKS" by Joseph Loch, U.S. patent 200070, 5 February 1878. Found in Google Books. [3]
Rae, Andrew E. "Combination lock". Google Patents.
U.S. patent 2,029,080

securycles.fr

"Thème Serrurerie".

web.archive.org

Paul Vallely, How Islamic Inventors Changed the World, The Independent, 11 March 2006.
"Operating Instruction for the X-09 Type 1F High Security Electronic Lock" (PDF). December 2010. Archived from the original (PDF) on 28 July 2011.

zamki-garant.ru

"Commercial locksmith".