MX147564A - IMPROVED BLACKBOARD - Google Patents

IMPROVED BLACKBOARD

Info

Publication number
MX147564A
MX147564A MX17516578A MX17516578A MX147564A MX 147564 A MX147564 A MX 147564A MX 17516578 A MX17516578 A MX 17516578A MX 17516578 A MX17516578 A MX 17516578A MX 147564 A MX147564 A MX 147564A
Authority
MX
Mexico
Prior art keywords
improved blackboard
blackboard
improved
Prior art date
Application number
MX17516578A
Other languages
Spanish (es)
Inventor
Blanca Calderon De Huitron
Original Assignee
Blanca Calderon De Huitron
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 Blanca Calderon De Huitron filed Critical Blanca Calderon De Huitron
Priority to MX17516578A priority Critical patent/MX147564A/en
Publication of MX147564A publication Critical patent/MX147564A/en

Links

MX17516578A 1978-10-10 1978-10-10 IMPROVED BLACKBOARD MX147564A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MX17516578A MX147564A (en) 1978-10-10 1978-10-10 IMPROVED BLACKBOARD

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MX17516578A MX147564A (en) 1978-10-10 1978-10-10 IMPROVED BLACKBOARD

Publications (1)

Publication Number Publication Date
MX147564A true MX147564A (en) 1982-12-14

Family

ID=19746506

Family Applications (1)

Application Number Title Priority Date Filing Date
MX17516578A MX147564A (en) 1978-10-10 1978-10-10 IMPROVED BLACKBOARD

Country Status (1)

Country Link
MX (1) MX147564A (en)

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