CA424732A - Dispositif optique a compter - Google Patents

Dispositif optique a compter

Info

Publication number
CA424732A
CA424732A CA424732A CA424732DA CA424732A CA 424732 A CA424732 A CA 424732A CA 424732 A CA424732 A CA 424732A CA 424732D A CA424732D A CA 424732DA CA 424732 A CA424732 A CA 424732A
Authority
CA
Canada
Prior art keywords
counting device
optical counting
optical
counting
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
CA424732A
Other languages
English (en)
Inventor
T. Rooney John
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.)
SPENCER LENS Co
Original Assignee
SPENCER LENS Co
Publication date
Application granted granted Critical
Publication of CA424732A publication Critical patent/CA424732A/fr
Expired legal-status Critical Current

Links

CA424732A Dispositif optique a compter Expired CA424732A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA424732T

Publications (1)

Publication Number Publication Date
CA424732A true CA424732A (fr) 1944-12-26

Family

ID=35535747

Family Applications (1)

Application Number Title Priority Date Filing Date
CA424732A Expired CA424732A (fr) Dispositif optique a compter

Country Status (1)

Country Link
CA (1) CA424732A (fr)

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