GB301830A - Improvements in and relating to electric lamps - Google Patents

Improvements in and relating to electric lamps

Info

Publication number
GB301830A
GB301830A GB35765/28A GB3576528A GB301830A GB 301830 A GB301830 A GB 301830A GB 35765/28 A GB35765/28 A GB 35765/28A GB 3576528 A GB3576528 A GB 3576528A GB 301830 A GB301830 A GB 301830A
Authority
GB
United Kingdom
Prior art keywords
relating
electric lamps
bulbs
pipkin
assignees
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
GB35765/28A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB301830A publication Critical patent/GB301830A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
    • H01J5/08—Vessels; Containers; Shields associated therewith; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

301,830. British Thomson-Houston Co., Ltd., (Assignees of Pipkin, M.). Dec. 6, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. Bulbs.-Opal, white or other natural coloured glass bulbs are frosted on the inside, preferably by an etching process. The whole or a portion of the outside, and preferably the bottom may be coated by spraying or dipping: a suitable coating is that described in Specification 196,843.
GB35765/28A 1927-12-06 1928-12-04 Improvements in and relating to electric lamps Expired GB301830A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US301830XA 1927-12-06 1927-12-06

Publications (1)

Publication Number Publication Date
GB301830A true GB301830A (en) 1929-07-18

Family

ID=21852935

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35765/28A Expired GB301830A (en) 1927-12-06 1928-12-04 Improvements in and relating to electric lamps

Country Status (1)

Country Link
GB (1) GB301830A (en)

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