FR650039A - Improvements in photoelectric devices - Google Patents

Improvements in photoelectric devices

Info

Publication number
FR650039A
FR650039A FR650039DA FR650039A FR 650039 A FR650039 A FR 650039A FR 650039D A FR650039D A FR 650039DA FR 650039 A FR650039 A FR 650039A
Authority
FR
France
Prior art keywords
photoelectric devices
photoelectric
devices
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.)
CBS Corp
Original Assignee
Westinghouse Electric and Manufacturing Co
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 Westinghouse Electric and Manufacturing Co filed Critical Westinghouse Electric and Manufacturing Co
Application granted granted Critical
Publication of FR650039A publication Critical patent/FR650039A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
    • H01J40/02—Details
    • H01J40/04—Electrodes
FR650039D 1927-01-29 1928-01-26 Improvements in photoelectric devices Expired FR650039A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US650039XA 1927-01-29 1927-01-29

Publications (1)

Publication Number Publication Date
FR650039A true FR650039A (en) 1928-12-31

Family

ID=22059694

Family Applications (1)

Application Number Title Priority Date Filing Date
FR650039D Expired FR650039A (en) 1927-01-29 1928-01-26 Improvements in photoelectric devices

Country Status (1)

Country Link
FR (1) FR650039A (en)

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