FR988349A - Warning signal system with capacity - Google Patents

Warning signal system with capacity

Info

Publication number
FR988349A
FR988349A FR988349DA FR988349A FR 988349 A FR988349 A FR 988349A FR 988349D A FR988349D A FR 988349DA FR 988349 A FR988349 A FR 988349A
Authority
FR
France
Prior art keywords
capacity
warning signal
signal system
warning
signal
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
Per Harry Elias Claesson
Karl Lennart Johansson
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 filed Critical
Application granted granted Critical
Publication of FR988349A publication Critical patent/FR988349A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/26—Electrical actuation by proximity of an intruder causing variation in capacitance or inductance of a circuit

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR988349D 1948-06-22 1949-06-16 Warning signal system with capacity Expired FR988349A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE988349X 1948-06-22

Publications (1)

Publication Number Publication Date
FR988349A true FR988349A (en) 1951-08-27

Family

ID=20414001

Family Applications (1)

Application Number Title Priority Date Filing Date
FR988349D Expired FR988349A (en) 1948-06-22 1949-06-16 Warning signal system with capacity

Country Status (1)

Country Link
FR (1) FR988349A (en)

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