FR561004A - Table de multiplication lumineuse - Google Patents

Table de multiplication lumineuse

Info

Publication number
FR561004A
FR561004A FR561004DA FR561004A FR 561004 A FR561004 A FR 561004A FR 561004D A FR561004D A FR 561004DA FR 561004 A FR561004 A FR 561004A
Authority
FR
France
Prior art keywords
multiplication table
light multiplication
light
multiplication
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
Other languages
English (en)
Inventor
Jules-Auguste Villeval
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
Application granted granted Critical
Publication of FR561004A publication Critical patent/FR561004A/fr
Expired legal-status Critical Current

Links

FR561004D 1922-12-19 1922-12-19 Table de multiplication lumineuse Expired FR561004A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR561004T 1922-12-19

Publications (1)

Publication Number Publication Date
FR561004A true FR561004A (fr) 1923-10-15

Family

ID=8943323

Family Applications (1)

Application Number Title Priority Date Filing Date
FR561004D Expired FR561004A (fr) 1922-12-19 1922-12-19 Table de multiplication lumineuse

Country Status (1)

Country Link
FR (1) FR561004A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970386A (en) * 1958-11-26 1961-02-07 Richard E Knutson Arithmetic instructing aid circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970386A (en) * 1958-11-26 1961-02-07 Richard E Knutson Arithmetic instructing aid circuit

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