JPS5041958Y1 - - Google Patents

Info

Publication number
JPS5041958Y1
JPS5041958Y1 JP7748270U JP7748270U JPS5041958Y1 JP S5041958 Y1 JPS5041958 Y1 JP S5041958Y1 JP 7748270 U JP7748270 U JP 7748270U JP 7748270 U JP7748270 U JP 7748270U JP S5041958 Y1 JPS5041958 Y1 JP S5041958Y1
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.)
Expired
Application number
JP7748270U
Other languages
Japanese (ja)
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 JP7748270U priority Critical patent/JPS5041958Y1/ja
Priority to US00160586A priority patent/US3771240A/en
Priority to DE2139044A priority patent/DE2139044C3/de
Publication of JPS5041958Y1 publication Critical patent/JPS5041958Y1/ja
Expired legal-status Critical Current

Links

Landscapes

  • Electrically Operated Instructional Devices (AREA)
JP7748270U 1970-08-05 1970-08-05 Expired JPS5041958Y1 (enrdf_load_stackoverflow)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP7748270U JPS5041958Y1 (enrdf_load_stackoverflow) 1970-08-05 1970-08-05
US00160586A US3771240A (en) 1970-08-05 1971-07-08 Self-teaching system
DE2139044A DE2139044C3 (de) 1970-08-05 1971-08-04 Elektrische Selbstlerneinrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7748270U JPS5041958Y1 (enrdf_load_stackoverflow) 1970-08-05 1970-08-05

Publications (1)

Publication Number Publication Date
JPS5041958Y1 true JPS5041958Y1 (enrdf_load_stackoverflow) 1975-11-28

Family

ID=33067190

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7748270U Expired JPS5041958Y1 (enrdf_load_stackoverflow) 1970-08-05 1970-08-05

Country Status (1)

Country Link
JP (1) JPS5041958Y1 (enrdf_load_stackoverflow)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS435081Y1 (enrdf_load_stackoverflow) * 1964-04-24 1968-03-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS435081Y1 (enrdf_load_stackoverflow) * 1964-04-24 1968-03-04

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