CA459813A - Ouverture de reception de lumiere pour photometres - Google Patents

Ouverture de reception de lumiere pour photometres

Info

Publication number
CA459813A
CA459813A CA459813A CA459813DA CA459813A CA 459813 A CA459813 A CA 459813A CA 459813 A CA459813 A CA 459813A CA 459813D A CA459813D A CA 459813DA CA 459813 A CA459813 A CA 459813A
Authority
CA
Canada
Prior art keywords
light
meters
acceptance aperture
aperture
acceptance
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
CA459813A
Other languages
English (en)
Inventor
D. Hickok Robert
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.)
CLEVELAND PATENTS
Original Assignee
CLEVELAND PATENTS
Publication date
Application granted granted Critical
Publication of CA459813A publication Critical patent/CA459813A/fr
Expired legal-status Critical Current

Links

CA459813A Ouverture de reception de lumiere pour photometres Expired CA459813A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA459813T

Publications (1)

Publication Number Publication Date
CA459813A true CA459813A (fr) 1949-09-20

Family

ID=35578714

Family Applications (1)

Application Number Title Priority Date Filing Date
CA459813A Expired CA459813A (fr) Ouverture de reception de lumiere pour photometres

Country Status (1)

Country Link
CA (1) CA459813A (fr)

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