JPS5037574B1 - - Google Patents

Info

Publication number
JPS5037574B1
JPS5037574B1 JP45102949A JP10294970A JPS5037574B1 JP S5037574 B1 JPS5037574 B1 JP S5037574B1 JP 45102949 A JP45102949 A JP 45102949A JP 10294970 A JP10294970 A JP 10294970A JP S5037574 B1 JPS5037574 B1 JP S5037574B1
Authority
JP
Japan
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.)
Pending
Application number
JP45102949A
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
Priority to JP45102949A priority Critical patent/JPS5037574B1/ja
Priority to US00196953A priority patent/US3789270A/en
Publication of JPS5037574B1 publication Critical patent/JPS5037574B1/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B5/00—Electrically-operated educational appliances

Landscapes

  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Electrically Operated Instructional Devices (AREA)
JP45102949A 1970-11-21 1970-11-21 Pending JPS5037574B1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP45102949A JPS5037574B1 (ja) 1970-11-21 1970-11-21
US00196953A US3789270A (en) 1970-11-21 1971-11-09 Wiring system for group testing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45102949A JPS5037574B1 (ja) 1970-11-21 1970-11-21

Publications (1)

Publication Number Publication Date
JPS5037574B1 true JPS5037574B1 (ja) 1975-12-03

Family

ID=14341051

Family Applications (1)

Application Number Title Priority Date Filing Date
JP45102949A Pending JPS5037574B1 (ja) 1970-11-21 1970-11-21

Country Status (2)

Country Link
US (1) US3789270A (ja)
JP (1) JPS5037574B1 (ja)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US505819A (en) * 1893-10-03 downs
US418322A (en) * 1889-12-31 Electric-signal system for letter-boxes
US453982A (en) * 1891-06-09 milliken
GB301021A (en) * 1927-11-23 1929-02-21 Siemens Ag Electric signalling circuit for use in mines
US3199230A (en) * 1963-05-17 1965-08-10 Robert W Sylvester Student teaching device

Also Published As

Publication number Publication date
US3789270A (en) 1974-01-29

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