CA1019570A - Magnetic display board - Google Patents

Magnetic display board

Info

Publication number
CA1019570A
CA1019570A CA190,605A CA190605A CA1019570A CA 1019570 A CA1019570 A CA 1019570A CA 190605 A CA190605 A CA 190605A CA 1019570 A CA1019570 A CA 1019570A
Authority
CA
Canada
Prior art keywords
display board
magnetic display
magnetic
board
display
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
CA190,605A
Other languages
French (fr)
Inventor
Joseph P. Josephson
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 CA190,605A priority Critical patent/CA1019570A/en
Priority to US05/697,388 priority patent/US4023290A/en
Application granted granted Critical
Publication of CA1019570A publication Critical patent/CA1019570A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
    • G09F7/02—Signs, plates, panels or boards using readily-detachable elements bearing or forming symbols
    • G09F7/04—Signs, plates, panels or boards using readily-detachable elements bearing or forming symbols the elements being secured or adapted to be secured by magnetic means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
CA190,605A 1974-01-21 1974-01-21 Magnetic display board Expired CA1019570A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA190,605A CA1019570A (en) 1974-01-21 1974-01-21 Magnetic display board
US05/697,388 US4023290A (en) 1974-01-21 1976-06-18 Chart device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA190,605A CA1019570A (en) 1974-01-21 1974-01-21 Magnetic display board

Publications (1)

Publication Number Publication Date
CA1019570A true CA1019570A (en) 1977-10-25

Family

ID=4098982

Family Applications (1)

Application Number Title Priority Date Filing Date
CA190,605A Expired CA1019570A (en) 1974-01-21 1974-01-21 Magnetic display board

Country Status (1)

Country Link
CA (1) CA1019570A (en)

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