CA548219A - Visual control device or the like - Google Patents

Visual control device or the like

Info

Publication number
CA548219A
CA548219A CA548219A CA548219DA CA548219A CA 548219 A CA548219 A CA 548219A CA 548219 A CA548219 A CA 548219A CA 548219D A CA548219D A CA 548219DA CA 548219 A CA548219 A CA 548219A
Authority
CA
Canada
Prior art keywords
control device
visual control
visual
control
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
CA548219A
Other languages
French (fr)
Inventor
G. Christenson Helmer
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
Publication date
Application granted granted Critical
Publication of CA548219A publication Critical patent/CA548219A/en
Expired legal-status Critical Current

Links

CA548219A Visual control device or the like Expired CA548219A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA548219T

Publications (1)

Publication Number Publication Date
CA548219A true CA548219A (en) 1957-11-05

Family

ID=35709588

Family Applications (1)

Application Number Title Priority Date Filing Date
CA548219A Expired CA548219A (en) Visual control device or the like

Country Status (1)

Country Link
CA (1) CA548219A (en)

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