FR350725A - Electric alarm for entrance doors - Google Patents

Electric alarm for entrance doors

Info

Publication number
FR350725A
FR350725A FR350725DA FR350725A FR 350725 A FR350725 A FR 350725A FR 350725D A FR350725D A FR 350725DA FR 350725 A FR350725 A FR 350725A
Authority
FR
France
Prior art keywords
entrance doors
electric alarm
alarm
doors
entrance
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
French (fr)
Inventor
Joannes Pezant
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.)
JOANNES PEZANT
Original Assignee
JOANNES PEZANT
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 JOANNES PEZANT filed Critical JOANNES PEZANT
Application granted granted Critical
Publication of FR350725A publication Critical patent/FR350725A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H29/00—Switches having at least one liquid contact
    • H01H29/18—Switches having at least one liquid contact with level of surface of contact liquid displaced by non-electrical contact-making plunger
FR350725D 1905-01-13 1905-01-13 Electric alarm for entrance doors Expired FR350725A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR350725T 1905-01-13

Publications (1)

Publication Number Publication Date
FR350725A true FR350725A (en) 1905-06-24

Family

ID=1399086

Family Applications (1)

Application Number Title Priority Date Filing Date
FR350725D Expired FR350725A (en) 1905-01-13 1905-01-13 Electric alarm for entrance doors

Country Status (1)

Country Link
FR (1) FR350725A (en)

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