GB1257549A - - Google Patents

Info

Publication number
GB1257549A
GB1257549A GB6210569A GB1257549DA GB1257549A GB 1257549 A GB1257549 A GB 1257549A GB 6210569 A GB6210569 A GB 6210569A GB 1257549D A GB1257549D A GB 1257549DA GB 1257549 A GB1257549 A GB 1257549A
Authority
GB
United Kingdom
Prior art keywords
coil
round
outstation
portable device
watchman
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
GB6210569A
Other languages
English (en)
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
Publication of GB1257549A publication Critical patent/GB1257549A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
    • G07C1/20—Checking timed patrols, e.g. of watchman
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/29—Individual registration on entry or exit involving the use of a pass the pass containing active electronic elements, e.g. smartcards

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
GB6210569A 1969-12-19 1969-12-19 Expired GB1257549A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6210569 1969-12-19

Publications (1)

Publication Number Publication Date
GB1257549A true GB1257549A (enrdf_load_stackoverflow) 1971-12-22

Family

ID=10487877

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6210569A Expired GB1257549A (enrdf_load_stackoverflow) 1969-12-19 1969-12-19

Country Status (1)

Country Link
GB (1) GB1257549A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3024068A1 (de) * 1979-06-28 1981-01-08 Nance Kivell S Vorrichtung zur speicherung und weitergabe von informationen
GB2120825A (en) * 1982-05-14 1983-12-07 Sec Conn Limited Safety inspection monitoring system
GB2141856A (en) * 1983-04-19 1985-01-03 Yeoman Electronics Limited Security system
GB2260438A (en) * 1991-09-10 1993-04-14 Foley Electronics Limited Inspection system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3024068A1 (de) * 1979-06-28 1981-01-08 Nance Kivell S Vorrichtung zur speicherung und weitergabe von informationen
US4338601A (en) * 1979-06-28 1982-07-06 Nance Kivell S Apparatus for the storage and transfer of information
GB2120825A (en) * 1982-05-14 1983-12-07 Sec Conn Limited Safety inspection monitoring system
GB2141856A (en) * 1983-04-19 1985-01-03 Yeoman Electronics Limited Security system
GB2260438A (en) * 1991-09-10 1993-04-14 Foley Electronics Limited Inspection system
GB2260438B (en) * 1991-09-10 1995-01-04 Foley Electronics Limited Inspection system

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees