NL300473A - - Google Patents

Info

Publication number
NL300473A
NL300473A NL300473DA NL300473A NL 300473 A NL300473 A NL 300473A NL 300473D A NL300473D A NL 300473DA NL 300473 A NL300473 A NL 300473A
Authority
NL
Netherlands
Application number
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.)
Publication of NL300473A publication Critical patent/NL300473A/xx

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/08—Mechanical actuation by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G08B13/149—Mechanical actuation by lifting or attempted removal of hand-portable articles with electric, magnetic, capacitive switch actuation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
NL300473D 1963-04-17 NL300473A (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA0042907 1963-04-17

Publications (1)

Publication Number Publication Date
NL300473A true NL300473A (fi)

Family

ID=6933361

Family Applications (1)

Application Number Title Priority Date Filing Date
NL300473D NL300473A (fi) 1963-04-17

Country Status (5)

Country Link
US (1) US3247502A (fi)
BE (1) BE640835A (fi)
CH (1) CH428503A (fi)
GB (1) GB1002295A (fi)
NL (1) NL300473A (fi)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3484775A (en) * 1965-10-20 1969-12-16 Wallace Dean Cline Theft prevention system
US3463491A (en) * 1966-01-26 1969-08-26 Albert E Shaw Pin detection system with radially symmetrical pattern of magnetic reed switches
US3530451A (en) * 1967-01-20 1970-09-22 Security Systems Inc Holster radio alarm
US3544987A (en) * 1967-02-24 1970-12-01 Renville H Mcmann Jr Property protection alarm system
US3582931A (en) * 1967-10-18 1971-06-01 Daniel Nawrocki Pilferage-prevention system
US3725887A (en) * 1968-06-10 1973-04-03 Sneider Electronic Sys Inc Radio transmitting alarm system
US3618059A (en) * 1968-06-19 1971-11-02 Milton F Allen Electronic detection and tracing means
US3569644A (en) * 1969-07-14 1971-03-09 Elgin Electronics Bill trap
US3641425A (en) * 1969-08-07 1972-02-08 Transalarm Electronics Inc Alarm system
US3618067A (en) * 1969-11-04 1971-11-02 Donald P Devale Movement detector
US3710371A (en) * 1970-02-18 1973-01-09 G Whalen Portable security alarm and alarm system
US3641540A (en) * 1970-03-30 1972-02-08 Joel L Cutler Wireless alarm system
US3665448A (en) * 1970-08-03 1972-05-23 Hugh A Mcglinchey Electronic shoplifting prevention system
US4023176A (en) * 1975-04-02 1977-05-10 Texas Instruments Incorporated Beacon tracking display system
NL8204500A (nl) * 1982-11-19 1984-06-18 Castelijn & Beerens Lederwaren Draagbare alarminrichting.
JPS61201454U (fi) * 1985-06-07 1986-12-17
US4638307A (en) * 1985-10-15 1987-01-20 Swartout Willson C Patient position monitoring system
NO168394C (no) * 1986-05-21 1992-02-12 Securiton Ag Innretning til sikring mot tyveri av gjenstander
GB2197516B (en) * 1986-11-15 1990-10-03 John Bryan Clough Security device
WO1988003689A1 (en) * 1986-11-15 1988-05-19 John Bryan Clough Security device
US5512877A (en) * 1995-05-09 1996-04-30 Mosler, Inc. Currency removal sensor system
US7388484B2 (en) * 2005-08-16 2008-06-17 Honeywell International Inc. Conductive tamper switch for security devices
IT201900012729A1 (it) * 2019-07-24 2021-01-24 Petersen Fabio Rocco Valentini Dispositivo antifurto per oggetti da parete

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899674A (en) * 1959-08-11 Sierer
GB669820A (en) * 1948-03-06 1952-04-09 John Westaway Improvements in electric alarm devices
US2766358A (en) * 1950-12-13 1956-10-09 Davidson Signal Co Ltd Hold-up alarm signal system
US2754498A (en) * 1954-04-29 1956-07-10 Louise K Lavelle Alarm device for suspended articles
GB770958A (en) * 1954-06-22 1957-03-27 Bonochord Ltd Improvements relating to burglar alarms
US2943308A (en) * 1956-03-15 1960-06-28 Everett A Westphal Protective alarm system
US2905762A (en) * 1957-04-10 1959-09-22 George W Rettie Fire and burglar alarm system
US2877361A (en) * 1957-04-12 1959-03-10 Holmes Electric Protective Com Burglar alarm system
US3056951A (en) * 1958-05-06 1962-10-02 Doris H Tooni Safe alarm system
DE1108111B (de) * 1960-05-20 1961-05-31 Siemens Ag Anordnung zur Sicherung gegen Diebstahl
US3161742A (en) * 1961-08-24 1964-12-15 Specialties Dev Corp Magnetic intruder and fire deterctor
US3135953A (en) * 1961-11-06 1964-06-02 Samuel M Bagno Lamp illuminating network
US3192517A (en) * 1962-05-11 1965-06-29 Bay State Security Corp Burglar alarm
US3155954A (en) * 1962-06-15 1964-11-03 Howard M Larrick Automatic sensitivity control for sound actuated detection and alarm systems
US3114905A (en) * 1962-08-13 1963-12-17 Michael T Sliman Alarm system

Also Published As

Publication number Publication date
BE640835A (fi) 1964-04-01
CH428503A (de) 1967-01-15
US3247502A (en) 1966-04-19
GB1002295A (en) 1965-08-25

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