CA138997A - Compteur du temps d'exposition - Google Patents

Compteur du temps d'exposition

Info

Publication number
CA138997A
CA138997A CA000138997A CA138997DA CA138997A CA 138997 A CA138997 A CA 138997A CA 000138997 A CA000138997 A CA 000138997A CA 138997D A CA138997D A CA 138997DA CA 138997 A CA138997 A CA 138997A
Authority
CA
Canada
Prior art keywords
time exposure
exposure meter
meter
time
exposure
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
CA000138997A
Other languages
English (en)
Inventor
Edred M. Woodworth
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
Application granted granted Critical
Publication of CA138997A publication Critical patent/CA138997A/fr
Expired legal-status Critical Current

Links

CA000138997A 1911-11-13 1911-11-13 Compteur du temps d'exposition Expired CA138997A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA138997T 1911-11-13

Publications (1)

Publication Number Publication Date
CA138997A true CA138997A (fr) 1912-03-05

Family

ID=45258713

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000138997A Expired CA138997A (fr) 1911-11-13 1911-11-13 Compteur du temps d'exposition

Country Status (1)

Country Link
CA (1) CA138997A (fr)

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