ES64090A1 - Slate pencil-blackboard. - Google Patents

Slate pencil-blackboard.

Info

Publication number
ES64090A1
ES64090A1 ES64090A ES64090A ES64090A1 ES 64090 A1 ES64090 A1 ES 64090A1 ES 64090 A ES64090 A ES 64090A ES 64090 A ES64090 A ES 64090A ES 64090 A1 ES64090 A1 ES 64090A1
Authority
ES
Spain
Prior art keywords
blackboard
slate pencil
slate
pencil
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
ES64090A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to ES64090A priority Critical patent/ES64090A1/en
Publication of ES64090A1 publication Critical patent/ES64090A1/en
Expired legal-status Critical Current

Links

ES64090A 1917-03-13 1917-03-13 Slate pencil-blackboard. Expired ES64090A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES64090A ES64090A1 (en) 1917-03-13 1917-03-13 Slate pencil-blackboard.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES64090A ES64090A1 (en) 1917-03-13 1917-03-13 Slate pencil-blackboard.

Publications (1)

Publication Number Publication Date
ES64090A1 true ES64090A1 (en) 1917-05-01

Family

ID=64236888

Family Applications (1)

Application Number Title Priority Date Filing Date
ES64090A Expired ES64090A1 (en) 1917-03-13 1917-03-13 Slate pencil-blackboard.

Country Status (1)

Country Link
ES (1) ES64090A1 (en)

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