PL248715A1 - Blackboard - Google Patents

Blackboard

Info

Publication number
PL248715A1
PL248715A1 PL24871584A PL24871584A PL248715A1 PL 248715 A1 PL248715 A1 PL 248715A1 PL 24871584 A PL24871584 A PL 24871584A PL 24871584 A PL24871584 A PL 24871584A PL 248715 A1 PL248715 A1 PL 248715A1
Authority
PL
Poland
Prior art keywords
blackboard
Prior art date
Application number
PL24871584A
Other versions
PL143699B1 (en
Inventor
Zygmunt Stanczuk
Original Assignee
Wojewodzka Pracownia Dydaktycz
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 Wojewodzka Pracownia Dydaktycz filed Critical Wojewodzka Pracownia Dydaktycz
Priority to PL24871584A priority Critical patent/PL143699B1/en
Publication of PL248715A1 publication Critical patent/PL248715A1/en
Publication of PL143699B1 publication Critical patent/PL143699B1/en

Links

PL24871584A 1984-07-12 1984-07-12 Blackboard PL143699B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL24871584A PL143699B1 (en) 1984-07-12 1984-07-12 Blackboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL24871584A PL143699B1 (en) 1984-07-12 1984-07-12 Blackboard

Publications (2)

Publication Number Publication Date
PL248715A1 true PL248715A1 (en) 1986-07-29
PL143699B1 PL143699B1 (en) 1988-03-31

Family

ID=20022658

Family Applications (1)

Application Number Title Priority Date Filing Date
PL24871584A PL143699B1 (en) 1984-07-12 1984-07-12 Blackboard

Country Status (1)

Country Link
PL (1) PL143699B1 (en)

Also Published As

Publication number Publication date
PL143699B1 (en) 1988-03-31

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