SE7711970L - TELEPHONE FOR PORTFOLIO SYSTEMS - Google Patents

TELEPHONE FOR PORTFOLIO SYSTEMS

Info

Publication number: SE7711970L
Authority: SE; Sweden
Prior art keywords: telephone; portfolio; systems; portfolio systems
Prior art date: 1976-10-28

Application number

SE7711970A

Other languages

Unknown language ( )

Swedish (sv)

Inventor

M Heppner

W Koch

F Loh

Original Assignee

Loh Kg Ritto Werk

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.)

1976-10-28

Filing date

1977-10-25

Publication date

1978-04-29

1977-10-25 Application filed by Loh Kg Ritto Werk filed Critical Loh Kg Ritto Werk

1978-04-29 Publication of SE7711970L publication Critical patent/SE7711970L/en

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
- H04M11/025—Door telephones

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Telephone Set Structure (AREA)
Interconnected Communication Systems, Intercoms, And Interphones (AREA)

SE7711970A 1976-10-28 1977-10-25 TELEPHONE FOR PORTFOLIO SYSTEMS SE7711970L (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE19762648942 DE2648942A1 (en)	1976-10-28	1976-10-28	Door opening intercom system telephone instrument - has switch which connects or disconnects calling element to or from bell line and has speech keys in case

Publications (1)

Publication Number	Publication Date
SE7711970L true SE7711970L (en)	1978-04-29

Family

ID=5991674

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE7711970A SE7711970L (en)	1976-10-28	1977-10-25	TELEPHONE FOR PORTFOLIO SYSTEMS

Country Status (3)

Country	Link
DE (1)	DE2648942A1 (en)
IT (1)	IT1089579B (en)
SE (1)	SE7711970L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
ES1061117Y (en) *	2005-08-25	2006-04-16	Soriano Manuel Barbero	PERFECTED DOOR INTERFON.

1976
- 1976-10-28 DE DE19762648942 patent/DE2648942A1/en not_active Withdrawn
1977
- 1977-10-25 SE SE7711970A patent/SE7711970L/en not_active Application Discontinuation
- 1977-10-26 IT IT486477A patent/IT1089579B/en active

Also Published As

Publication number	Publication date
IT1089579B (en)	1985-06-18
DE2648942A1 (en)	1978-05-11

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Legal Events

Date	Code	Title	Description
1995-02-28	NAV	Patent application has lapsed	Ref document number: 7711970-9