CH7225A - A set of calculation tables with colored markings - Google Patents

A set of calculation tables with colored markings

Info

Publication number
CH7225A
CH7225A CH7225A CH7225DA CH7225A CH 7225 A CH7225 A CH 7225A CH 7225 A CH7225 A CH 7225A CH 7225D A CH7225D A CH 7225DA CH 7225 A CH7225 A CH 7225A
Authority
CH
Switzerland
Prior art keywords
colored markings
calculation tables
tables
calculation
markings
Prior art date
Application number
CH7225A
Other languages
German (de)
Inventor
Ernst-Carl-Albert Rothe
Original Assignee
Rothe Ernst Carl Albert
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 Rothe Ernst Carl Albert filed Critical Rothe Ernst Carl Albert
Publication of CH7225A publication Critical patent/CH7225A/en

Links

CH7225A 1893-08-07 1893-08-07 A set of calculation tables with colored markings CH7225A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH7225T 1893-08-07

Publications (1)

Publication Number Publication Date
CH7225A true CH7225A (en) 1894-02-15

Family

ID=4193650

Family Applications (1)

Application Number Title Priority Date Filing Date
CH7225A CH7225A (en) 1893-08-07 1893-08-07 A set of calculation tables with colored markings

Country Status (1)

Country Link
CH (1) CH7225A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2748500A (en) * 1951-07-06 1956-06-05 Clara H Cormack Educational appliance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2748500A (en) * 1951-07-06 1956-06-05 Clara H Cormack Educational appliance

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