Sender (telephony) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sender (telephony)" in English language version.

refsWebsite

Global rank English rank

6^th place

6^th place

1,459^th place

991^st place

archive.org

Goldsmith, E. H. (1926). Panel Type Machine Switching. pp. 26-32.
"Crossbar Dial System: Part 1". archive.org. Retrieved 2017-07-14. pp. 34, 41

uspto.gov

patft.uspto.gov

US 1,058,903, John Newberry Reynolds, "Telephone-Exchange System", issued 4/15/1913, assigned to Western Electric Company