CA53126A - Blackboard - Google Patents

Blackboard

Info

Publication number
CA53126A
CA53126A CA000053126A CA53126DA CA53126A CA 53126 A CA53126 A CA 53126A CA 000053126 A CA000053126 A CA 000053126A CA 53126D A CA53126D A CA 53126DA CA 53126 A CA53126 A CA 53126A
Authority
CA
Canada
Prior art keywords
blackboard
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
CA000053126A
Other languages
French (fr)
Inventor
Walter Lyon Sinton
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.)
COMPARATIVE SYNOPTICAL CHART Co
Original Assignee
COMPARATIVE SYNOPTICAL CHART Co
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 COMPARATIVE SYNOPTICAL CHART Co filed Critical COMPARATIVE SYNOPTICAL CHART Co
Application granted granted Critical
Publication of CA53126A publication Critical patent/CA53126A/en
Expired legal-status Critical Current

Links

CA000053126A 1896-06-29 1896-06-29 Blackboard Expired CA53126A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA53126T 1896-06-29

Publications (1)

Publication Number Publication Date
CA53126A true CA53126A (en) 1896-08-05

Family

ID=45169665

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000053126A Expired CA53126A (en) 1896-06-29 1896-06-29 Blackboard

Country Status (1)

Country Link
CA (1) CA53126A (en)

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