CA29722A - Tableau noir spherique - Google Patents

Tableau noir spherique

Info

Publication number
CA29722A
CA29722A CA000029722A CA29722DA CA29722A CA 29722 A CA29722 A CA 29722A CA 000029722 A CA000029722 A CA 000029722A CA 29722D A CA29722D A CA 29722DA CA 29722 A CA29722 A CA 29722A
Authority
CA
Canada
Prior art keywords
black board
spherical black
spherical
board
black
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
CA000029722A
Other languages
English (en)
Inventor
William R. Story
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.)
HAVENS EDWIN S
Original Assignee
HAVENS EDWIN S
Publication date
Application granted granted Critical
Publication of CA29722A publication Critical patent/CA29722A/fr
Expired legal-status Critical Current

Links

CA000029722A Tableau noir spherique Expired CA29722A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA29722T

Publications (1)

Publication Number Publication Date
CA29722A true CA29722A (fr) 1888-08-22

Family

ID=45146262

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000029722A Expired CA29722A (fr) Tableau noir spherique

Country Status (1)

Country Link
CA (1) CA29722A (fr)

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