FR356992A - Sonnette pneumatique pour appartements - Google Patents

Sonnette pneumatique pour appartements

Info

Publication number
FR356992A
FR356992A FR356992DA FR356992A FR 356992 A FR356992 A FR 356992A FR 356992D A FR356992D A FR 356992DA FR 356992 A FR356992 A FR 356992A
Authority
FR
France
Prior art keywords
doorbell
apartments
pneumatic
pneumatic doorbell
Prior art date
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
Other languages
English (en)
Inventor
Carl Angelrath
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR356992A publication Critical patent/FR356992A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems, e.g. audible personal calling systems
    • G08B3/06—Audible signalling systems, e.g. audible personal calling systems using hydraulic transmission; using pneumatic transmission

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR356992D 1905-08-19 1905-08-19 Sonnette pneumatique pour appartements Expired FR356992A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR356992T 1905-08-19

Publications (1)

Publication Number Publication Date
FR356992A true FR356992A (fr) 1905-12-14

Family

ID=1404918

Family Applications (1)

Application Number Title Priority Date Filing Date
FR356992D Expired FR356992A (fr) 1905-08-19 1905-08-19 Sonnette pneumatique pour appartements

Country Status (1)

Country Link
FR (1) FR356992A (fr)

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