ES71916A1 - Improvements in telephone line circuits. - Google Patents

Improvements in telephone line circuits.

Info

Publication number: ES71916A1
Authority: ES; Spain
Prior art keywords: telephone line; line circuits; circuits; telephone; line
Prior art date: 1919-12-26
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Application number

ES71916A

Other languages

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Relay Automatic Telephone Company Ltd

Original Assignee

Relay Automatic Telephone Company Ltd

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1919-12-26

Filing date

1919-12-26

Publication date

1920-03-16

1919-12-26 Application filed by Relay Automatic Telephone Company Ltd filed Critical Relay Automatic Telephone Company Ltd

1919-12-26 Priority to ES71916A priority Critical patent/ES71916A1/en

1920-03-16 Publication of ES71916A1 publication Critical patent/ES71916A1/en

Status Expired legal-status Critical Current

Links

ES71916A 1919-12-26 1919-12-26 Improvements in telephone line circuits. Expired ES71916A1 (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
ES71916A ES71916A1 (en)	1919-12-26	1919-12-26	Improvements in telephone line circuits.

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
ES71916A ES71916A1 (en)	1919-12-26	1919-12-26	Improvements in telephone line circuits.

Publications (1)

Publication Number	Publication Date
ES71916A1 true ES71916A1 (en)	1920-03-16

Family

ID=64243659

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ES71916A Expired ES71916A1 (en)	1919-12-26	1919-12-26	Improvements in telephone line circuits.

Country Status (1)

Country	Link
ES (1)	ES71916A1 (en)

1919
- 1919-12-26 ES ES71916A patent/ES71916A1/en not_active Expired

Similar Documents

Publication	Publication Date	Title
ES71916A1 (en)	1920-03-16	Improvements in telephone line circuits.
ES71769A1 (en)	1920-03-01	Improvements in telephone lines.
ES70513A1 (en)	1919-09-16	Improvements in telephone devices.
DK30899C (en)	1922-12-11	Line selector telephone.
ES71336A1 (en)	1919-12-31	Improvements in teleautographic devices.
ES76926A1 (en)	1921-04-01	Improvements in telephones.
ES76927A1 (en)	1921-04-01	Improvements in telephones.
ES79730A1 (en)	1922-02-01	Improvements in telephones.
AT89489B (en)	1922-09-25	Circuit arrangement for intermediate switch in telephone systems.
ES70722A1 (en)	1919-10-16	Improvements in salakoffs.
AT89490B (en)	1922-09-25	Telephone system.
DK33823C (en)	1924-11-03	Telephone system.
DK34337C (en)	1925-03-30	Telephone system.
DK35129C (en)	1925-10-12	Telephone system.
DK37349C (en)	1927-04-11	Telephone system.
DK37946C (en)	1927-09-19	Telephone system.
DK33616C (en)	1924-09-01	Line selector telephone.
ES70874A1 (en)	1919-11-01	Improvements in suspenders.
ES69744A3 (en)	1919-06-01	Improvements in telephone cables.
DK25874C (en)	1920-04-26	Line device.
ES72975A1 (en)	1920-05-25	Improvements in networks or automatic telephone lines.
ES75526A1 (en)	1921-01-01	Improvements in telephones.
ES72473A1 (en)	1920-04-28	Improvements in telephone systems.
ES76447A1 (en)	1921-02-16	Intercom telephone set.
ES70366A1 (en)	1919-09-01	Telephone hearing.