GB1272615A - Improvements in and relating to gas-filled discharge lamps - Google Patents

Improvements in and relating to gas-filled discharge lamps

Info

Publication number
GB1272615A
GB1272615A GB21935/69A GB2193569A GB1272615A GB 1272615 A GB1272615 A GB 1272615A GB 21935/69 A GB21935/69 A GB 21935/69A GB 2193569 A GB2193569 A GB 2193569A GB 1272615 A GB1272615 A GB 1272615A
Authority
GB
United Kingdom
Prior art keywords
gas
side portions
discharge lamps
relating
april
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
GB21935/69A
Other languages
English (en)
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.)
RIOCH KK
Original Assignee
RIOCH KK
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 RIOCH KK filed Critical RIOCH KK
Publication of GB1272615A publication Critical patent/GB1272615A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/32—Special longitudinal shape, e.g. for advertising purposes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/54—Lamp housings; Illuminating means
    • G03B27/542—Lamp housings; Illuminating means for copying cameras, reflex exposure lighting

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Discharge Lamp (AREA)
GB21935/69A 1968-04-30 1969-04-30 Improvements in and relating to gas-filled discharge lamps Expired GB1272615A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP43029031A JPS4818070B1 (enExample) 1968-04-30 1968-04-30

Publications (1)

Publication Number Publication Date
GB1272615A true GB1272615A (en) 1972-05-03

Family

ID=12265024

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21935/69A Expired GB1272615A (en) 1968-04-30 1969-04-30 Improvements in and relating to gas-filled discharge lamps

Country Status (3)

Country Link
US (1) US3634716A (enExample)
JP (1) JPS4818070B1 (enExample)
GB (1) GB1272615A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2310078A (en) * 1996-01-24 1997-08-13 Terence Milner Discharge lamps

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3112878A1 (de) * 1981-03-31 1982-10-14 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Quecksilberdampf-niederdruckentladungslampe und verfahren zur herstellung
DE29701200U1 (de) * 1997-01-24 1997-03-20 Böhm, Werner, 98693 Ilmenau Gasentladungsröhre
US20090279178A1 (en) * 2008-05-09 2009-11-12 Chengwu Cui Scanhead For Image Illumination Uniformity And Method Thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA469166A (en) * 1950-11-07 Canadian General Electric Company Electric lamps of double spiral convolutions
US2392661A (en) * 1944-08-10 1946-01-08 Gen Electric Base for electric lamps or similar devices
US2562740A (en) * 1948-03-13 1951-07-31 Charles E Rose Illuminating device for automobile license plates
US2623988A (en) * 1948-05-24 1952-12-30 Electrical Products Corp Tube and support combination for illuminated signs
US2618089A (en) * 1949-09-17 1952-11-18 Charles E Rose Automobile license plate holder
BE514768A (enExample) * 1951-10-13
US2726587A (en) * 1951-12-03 1955-12-13 Richard S Cutter Photographic contact printer
US2743388A (en) * 1953-09-08 1956-04-24 Samuel C Bartley Electric lamp
US3300633A (en) * 1964-08-17 1967-01-24 Richards Corp Unitary serpentine tubular light source and mounting means and method of making

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2310078A (en) * 1996-01-24 1997-08-13 Terence Milner Discharge lamps
GB2310078B (en) * 1996-01-24 2000-10-18 Terence Milner Lighting device

Also Published As

Publication number Publication date
US3634716A (en) 1972-01-11
JPS4818070B1 (enExample) 1973-06-02

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Legal Events

Date Code Title Description
694A Case decided by the comptroller (rule 94(3)/1968)
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee