JPS6017003Y2 - 同分母分数の加減算計算尺 - Google Patents

同分母分数の加減算計算尺

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Publication number
JPS6017003Y2
JPS6017003Y2 JP10900880U JP10900880U JPS6017003Y2 JP S6017003 Y2 JPS6017003 Y2 JP S6017003Y2 JP 10900880 U JP10900880 U JP 10900880U JP 10900880 U JP10900880 U JP 10900880U JP S6017003 Y2 JPS6017003 Y2 JP S6017003Y2
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JP
Japan
Prior art keywords
cylinders
scale
fractions
same
fraction
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
JP10900880U
Other languages
English (en)
Japanese (ja)
Other versions
JPS5734055U (enrdf_load_stackoverflow
Inventor
博 宮田
Original Assignee
株式会社学習研究社
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 株式会社学習研究社 filed Critical 株式会社学習研究社
Priority to JP10900880U priority Critical patent/JPS6017003Y2/ja
Publication of JPS5734055U publication Critical patent/JPS5734055U/ja
Application granted granted Critical
Publication of JPS6017003Y2 publication Critical patent/JPS6017003Y2/ja
Expired legal-status Critical Current

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  • Length-Measuring Instruments Using Mechanical Means (AREA)
JP10900880U 1980-07-31 1980-07-31 同分母分数の加減算計算尺 Expired JPS6017003Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10900880U JPS6017003Y2 (ja) 1980-07-31 1980-07-31 同分母分数の加減算計算尺

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10900880U JPS6017003Y2 (ja) 1980-07-31 1980-07-31 同分母分数の加減算計算尺

Publications (2)

Publication Number Publication Date
JPS5734055U JPS5734055U (enrdf_load_stackoverflow) 1982-02-23
JPS6017003Y2 true JPS6017003Y2 (ja) 1985-05-25

Family

ID=29470218

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10900880U Expired JPS6017003Y2 (ja) 1980-07-31 1980-07-31 同分母分数の加減算計算尺

Country Status (1)

Country Link
JP (1) JPS6017003Y2 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02126880U (enrdf_load_stackoverflow) * 1989-03-29 1990-10-18

Also Published As

Publication number Publication date
JPS5734055U (enrdf_load_stackoverflow) 1982-02-23

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