JPS52110593A - Protection device of magnetically recorded documents - Google Patents

Protection device of magnetically recorded documents

Info

Publication number
JPS52110593A
JPS52110593A JP2750876A JP2750876A JPS52110593A JP S52110593 A JPS52110593 A JP S52110593A JP 2750876 A JP2750876 A JP 2750876A JP 2750876 A JP2750876 A JP 2750876A JP S52110593 A JPS52110593 A JP S52110593A
Authority
JP
Japan
Prior art keywords
magnetically recorded
protection device
recorded documents
documents
magnetized objects
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.)
Granted
Application number
JP2750876A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5441478B2 (enExample
Inventor
Rikuro Suzuki
Hiroshi Ohira
Yoshimasa Takahashi
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.)
DENSEI KOGYO KK
Shimadzu Corp
Shimizu Construction Co Ltd
Original Assignee
DENSEI KOGYO KK
Shimadzu Corp
Shimizu Construction Co Ltd
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 DENSEI KOGYO KK, Shimadzu Corp, Shimizu Construction Co Ltd filed Critical DENSEI KOGYO KK
Priority to JP2750876A priority Critical patent/JPS52110593A/ja
Publication of JPS52110593A publication Critical patent/JPS52110593A/ja
Publication of JPS5441478B2 publication Critical patent/JPS5441478B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Burglar Alarm Systems (AREA)
  • Emergency Alarm Devices (AREA)
  • Alarm Systems (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
JP2750876A 1976-03-12 1976-03-12 Protection device of magnetically recorded documents Granted JPS52110593A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2750876A JPS52110593A (en) 1976-03-12 1976-03-12 Protection device of magnetically recorded documents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2750876A JPS52110593A (en) 1976-03-12 1976-03-12 Protection device of magnetically recorded documents

Publications (2)

Publication Number Publication Date
JPS52110593A true JPS52110593A (en) 1977-09-16
JPS5441478B2 JPS5441478B2 (enExample) 1979-12-08

Family

ID=12223065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2750876A Granted JPS52110593A (en) 1976-03-12 1976-03-12 Protection device of magnetically recorded documents

Country Status (1)

Country Link
JP (1) JPS52110593A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62232092A (ja) * 1986-04-02 1987-10-12 Toyo Commun Equip Co Ltd 携帯型磁気検出装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62232092A (ja) * 1986-04-02 1987-10-12 Toyo Commun Equip Co Ltd 携帯型磁気検出装置

Also Published As

Publication number Publication date
JPS5441478B2 (enExample) 1979-12-08

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