CA421705A - Reading instrument - Google Patents

Reading instrument

Info

Publication number
CA421705A
CA421705A CA421705A CA421705DA CA421705A CA 421705 A CA421705 A CA 421705A CA 421705 A CA421705 A CA 421705A CA 421705D A CA421705D A CA 421705DA CA 421705 A CA421705 A CA 421705A
Authority
CA
Canada
Prior art keywords
reading instrument
instrument
reading
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
CA421705A
Other languages
French (fr)
Inventor
C. Miller Leonidas
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.)
Eastman Oil Well Survey Co
Original Assignee
Eastman Oil Well Survey Co
Publication date
Application granted granted Critical
Publication of CA421705A publication Critical patent/CA421705A/en
Expired legal-status Critical Current

Links

CA421705A Reading instrument Expired CA421705A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA421705T

Publications (1)

Publication Number Publication Date
CA421705A true CA421705A (en) 1944-07-25

Family

ID=35532685

Family Applications (1)

Application Number Title Priority Date Filing Date
CA421705A Expired CA421705A (en) Reading instrument

Country Status (1)

Country Link
CA (1) CA421705A (en)

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