CA549905A - Photometre logarithmique - Google Patents

Photometre logarithmique

Info

Publication number: CA549905A
Authority: CA; Canada
Prior art keywords: exposure meter; logarithmic exposure; logarithmic; meter; exposure
Prior art date: 1957-12-10
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

CA549905A

Other languages

Inventor

G. Stimson Allen

Brynes Kermit

B. Jennings Frederic

F. Taylor Clement

Original Assignee

Canadian General Electric Co Ltd

Publication date

1957-12-10

1957-12-10 Application granted granted Critical

1957-12-10 Publication of CA549905A publication Critical patent/CA549905A/fr

Status Expired legal-status Critical Current

CA549905A Photometre logarithmique Expired CA549905A (fr)

Application Number	Priority Date	Filing Date	Title
CA549905T

Publication Number	Publication Date
CA549905A true CA549905A (fr)	1957-12-10

Application Number	Title	Priority Date	Filing Date
CA549905A Expired CA549905A (fr)			Photometre logarithmique

Country	Link
CA (1)	CA549905A (fr)

Publication	Publication Date	Title
CA693993A (en)	1964-09-08	Exposure meter
CA640563A (en)	1962-05-01	Calculating apparatus
CA549905A (fr)	1957-12-10	Photometre logarithmique
CA543515A (fr)	1957-07-16	Hydrometre
CA559228A (fr)	1958-06-24	Photometre
AU237295B2 (en)	1960-05-19	Exposure meter
CA525355A (fr)	1956-05-22	Appareil a mesurer des elevations
AU219838B2 (en)	1957-09-05	Radiation exposure unit
AU5477759A (en)	1960-05-19	Exposure meter
CA538016A (fr)	1957-03-12	Compositions de revelateurs photographiques
AU226070B2 (en)	1958-03-20	Measuring
CA506532A (fr)	1954-10-12	Photometre
CA545786A (fr)	1957-09-03	Organe de reglage de compteur
CA543391A (fr)	1957-07-09	Appareil photographique
CA536186A (fr)	1957-01-22	Appareil photographique
CA536849A (fr)	1957-02-05	Appareil photographique
CA541265A (fr)	1957-05-21	Appareil photographique
CA543386A (fr)	1957-07-09	Appareil photographique
AU221037B2 (en)	1958-01-23	Photographic apparatus
CA545215A (fr)	1957-08-20	Appareil photographique
CA547599A (fr)	1957-10-15	Compteur d'eau
AU217426B2 (en)	1957-02-07	Metering apparatus
CA542048A (fr)	1957-06-11	Objectif photographique a six lentilles
AU2589857A (en)	1957-09-05	Radiation exposure unit
CA539348A (fr)	1957-04-09	Balance