FR700897A - Improvements to photoelectric cameras - Google Patents

Improvements to photoelectric cameras

Info

Publication number
FR700897A
FR700897A FR700897DA FR700897A FR 700897 A FR700897 A FR 700897A FR 700897D A FR700897D A FR 700897DA FR 700897 A FR700897 A FR 700897A
Authority
FR
France
Prior art keywords
photoelectric
cameras
photoelectric cameras
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
Other languages
French (fr)
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR700897A publication Critical patent/FR700897A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/04—Electron multipliers
    • H01J43/06—Electrode arrangements
    • H01J43/16—Electrode arrangements using essentially one dynode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
    • H01J40/16—Photoelectric discharge tubes not involving the ionisation of a gas having photo- emissive cathode, e.g. alkaline photoelectric cell
FR700897D 1929-08-28 1930-08-20 Improvements to photoelectric cameras Expired FR700897A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US389066A US2206713A (en) 1929-08-28 1929-08-28 Photoelectric apparatus

Publications (1)

Publication Number Publication Date
FR700897A true FR700897A (en) 1931-03-09

Family

ID=23536676

Family Applications (1)

Application Number Title Priority Date Filing Date
FR700897D Expired FR700897A (en) 1929-08-28 1930-08-20 Improvements to photoelectric cameras

Country Status (6)

Country Link
US (1) US2206713A (en)
AT (1) AT127570B (en)
DE (1) DE645331C (en)
FR (1) FR700897A (en)
GB (1) GB364006A (en)
NL (1) NL38911C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL53689C (en) * 1933-10-07
US2123024A (en) * 1936-05-29 1938-07-05 Rca Corp Electrode for electric discharge devices
DE890393C (en) * 1936-05-30 1953-09-17 Fernseh Gmbh Secondary electron amplifier working as a series multiplier
DE874176C (en) * 1939-03-25 1953-04-20 Sueddeutsche Telefon App Secondary electron multiplier with glow cathode
NL6903628A (en) * 1968-03-15 1969-09-17

Also Published As

Publication number Publication date
AT127570B (en) 1932-04-11
GB364006A (en) 1931-12-28
DE645331C (en) 1937-05-26
NL38911C (en)
US2206713A (en) 1940-07-02

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