DK20156C - Device by Telephone Exchange Systems. - Google Patents

Device by Telephone Exchange Systems.

Info

Publication number: DK20156C
Authority: DK; Denmark
Prior art keywords: telephone exchange; exchange systems; systems; telephone; exchange
Prior art date: 1915-05-10

Application number

Other languages

Original Assignee

Bell Telephone Mfg

Publication date

1915-05-10

1915-05-10 Application granted granted Critical

1915-05-10 Publication of DK20156C publication Critical patent/DK20156C/en

DK20156D Device by Telephone Exchange Systems. DK20156C (en)

Application Number	Priority Date	Filing Date	Title
DK20156T

Publication Number	Publication Date
DK20156C true DK20156C (en)	1915-05-10

Application Number	Title	Priority Date	Filing Date
DK20156D DK20156C (en)			Device by Telephone Exchange Systems.

Country	Link
DK (1)	DK20156C (en)

Publication	Publication Date	Title
DK20156C (en)	1915-05-10	Device by Telephone Exchange Systems.
DK19777C (en)	1915-02-01	Device by Telephone Exchange Systems.
DK20272C (en)	1915-06-28	Device by Telephone Exchange Systems.
DK20739C (en)	1915-11-08	Device by Telephone Exchange Systems.
DK20092C (en)	1915-04-19	Device by Dialers for Telephone Exchange Systems.
DK20429C (en)	1915-08-16	Device by Telephone Exchange Systems.
DK20519C (en)	1915-09-06	Device by Telephone Exchange Systems.
DK20347C (en)	1915-07-12	Device by Telephones.
DK19937C (en)	1915-03-08	Telephone exchange connection.
DK31791C (en)	1923-06-04	Device by Telephone System.
DK22566C (en)	1917-11-05	Device for self-acting Telephone Systems.
DK18626C (en)	1914-03-30	Telephone exchange system.
DK19678C (en)	1915-01-04	Telephone system.
DK20736C (en)	1915-11-08	Device by Kontrolure.
DK29979C (en)	1922-07-24	Device by Cylinderlaase.
DK19160C (en)	1914-08-24	Device by Telephones.
DK32848C (en)	1924-02-11	Telephone exchange system.
AT82832B (en)	1921-02-25	Telephone switching system.
DK21510C (en)	1916-09-18	Telephone exchange system.
DK27604C (en)	1921-05-17	Telephone exchange system.
DK34928C (en)	1925-08-31	Telephone exchange system.
DK17180C (en)	1913-04-07	Device for House Telephone Systems.
DK20370C (en)	1915-07-19	Telephone exchange system.
DK19834C (en)	1915-02-15	Device at Vadske.
DK20412C (en)	1915-08-09	Device at Rørmøller.