CH81701A - Display device for letter boxes connected to existing doorbell systems - Google Patents

Display device for letter boxes connected to existing doorbell systems

Info

Publication number
CH81701A
CH81701A CH81701A CH81701DA CH81701A CH 81701 A CH81701 A CH 81701A CH 81701 A CH81701 A CH 81701A CH 81701D A CH81701D A CH 81701DA CH 81701 A CH81701 A CH 81701A
Authority
CH
Switzerland
Prior art keywords
display device
boxes connected
letter boxes
doorbell systems
existing doorbell
Prior art date
Application number
CH81701A
Other languages
German (de)
Inventor
Ferdinand Walser
Original Assignee
Ferdinand Walser
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.)
Filing date
Publication date
Application filed by Ferdinand Walser filed Critical Ferdinand Walser
Publication of CH81701A publication Critical patent/CH81701A/en

Links

CH81701A 1919-01-30 1919-01-30 Display device for letter boxes connected to existing doorbell systems CH81701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH81701T 1919-01-30

Publications (1)

Publication Number Publication Date
CH81701A true CH81701A (en) 1919-07-01

Family

ID=4336226

Family Applications (1)

Application Number Title Priority Date Filing Date
CH81701A CH81701A (en) 1919-01-30 1919-01-30 Display device for letter boxes connected to existing doorbell systems

Country Status (1)

Country Link
CH (1) CH81701A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29703592U1 (en) * 1997-02-28 1997-04-17 Ten Haaf GmbH & Co. KG, 59823 Arnsberg Radio mailbox

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29703592U1 (en) * 1997-02-28 1997-04-17 Ten Haaf GmbH & Co. KG, 59823 Arnsberg Radio mailbox

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