GB751229A - Improvements in or relating to electronic vacuum tubes - Google Patents

Improvements in or relating to electronic vacuum tubes

Info

Publication number
GB751229A
GB751229A GB1447/54A GB144754A GB751229A GB 751229 A GB751229 A GB 751229A GB 1447/54 A GB1447/54 A GB 1447/54A GB 144754 A GB144754 A GB 144754A GB 751229 A GB751229 A GB 751229A
Authority
GB
United Kingdom
Prior art keywords
copper
envelope
ges
jan
silver
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
GB1447/54A
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.)
Elektronik Deutsche GmbH
Deutsche Elektronik GmbH
Original Assignee
Elektronik Deutsche GmbH
Deutsche Elektronik GmbH
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 Elektronik Deutsche GmbH, Deutsche Elektronik GmbH filed Critical Elektronik Deutsche GmbH
Publication of GB751229A publication Critical patent/GB751229A/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
    • H01J5/04—Vessels or containers characterised by the material thereof

Landscapes

  • Physical Vapour Deposition (AREA)

Abstract

751,229. Discharge apparatus. DEUTSCHE ELEKTRONIK GES., [formerly BLAUPUNKT ELECTRONIK GES.]. Jan. 18, 1954 [Jan. 17, 1953], No. 1447/54. Class 39 (1). The copper envelope of a vacuum tube is rendered gas-tight by coating it to a thickness of 2 to 4 Á with a metal, such as silver or tin, forming a low melting point eutectic with the copper, and annealing in a high vacuum at 900-950‹ C. If the copper envelope is a machined blank, it may be plated with further copper to provide a smoother surface for deposition of the metal coating. Envelope parts may be silver-soldered together during the annealing process.
GB1447/54A 1953-01-17 1954-01-18 Improvements in or relating to electronic vacuum tubes Expired GB751229A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE331347X 1953-01-17

Publications (1)

Publication Number Publication Date
GB751229A true GB751229A (en) 1956-06-27

Family

ID=6196343

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1447/54A Expired GB751229A (en) 1953-01-17 1954-01-18 Improvements in or relating to electronic vacuum tubes

Country Status (2)

Country Link
CH (1) CH331347A (en)
GB (1) GB751229A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179488A (en) * 1985-08-22 1987-03-04 English Electric Valve Co Ltd Laser apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179488A (en) * 1985-08-22 1987-03-04 English Electric Valve Co Ltd Laser apparatus
US4761792A (en) * 1985-08-22 1988-08-02 English Electric Valve Company Laser apparatus
GB2179488B (en) * 1985-08-22 1989-08-23 English Electric Valve Co Ltd Laser apparatus

Also Published As

Publication number Publication date
CH331347A (en) 1958-07-15

Similar Documents

Publication Publication Date Title
GB832874A (en) Improvements in the coating of fluorinated polymers
GB751229A (en) Improvements in or relating to electronic vacuum tubes
GB575309A (en) Improvements in or relating to electro-plating
GB1333617A (en) Cathode sputtering apparatus
CA492990A (en) Process for condensing vaporized metal halides
CA511162A (en) Precipitation of pure metallic copper from copper-bearing solutions
JPS5243708A (en) Method and apparatus for degassing molten metal
CA494080A (en) Process for the deposition of metal by an electric arc
ES388080A1 (en) A method for the manufacture of a film condenser for high frequency. (Machine-translation by Google Translate, not legally binding)
AU207950B2 (en) Crucible for melting metal inan arc furnace
CA511163A (en) Preparation of pure copper metal from copper-bearing scrap
CA532704A (en) Process for condensing vaporized metal halides
AU153830B2 (en) An improved process for recovering copper and tin from tinned copper
GB592831A (en) Improvements in metal to glass seals and methods of making them
AU159252B2 (en) Process for coating metals with aluminum
GB605889A (en) Strongly adherent metal coated articles and means for producing the same
CA502910A (en) Preparation of pure copper metal from copper-bearing scrap
AU2016756A (en) Crucible for melting metal inan arc furnace
AU1901353A (en) Process for coating metals with aluminum
AU207333B2 (en) Process forthe production of copper coatings on base metals
AU127550B2 (en) Method of manufacturing condenser tubes, condenser ferrules andthe like from copper base alloys
CA498392A (en) Production of metal coatings upon metals
AU217213B2 (en) MULTICELL CLOSED CIRCUIT FURNACE AND FUSED SALT Electrolysis process for aluminium production from ALUMINIUM OXIDE
CA530607A (en) Powder metallurgical method of shaping articles from high melting metals
AU445781B2 (en) Process for manufacturing of flat glass on a molten metal bath