DE219933C - - Google Patents

Info

Publication number
DE219933C
DE219933C DENDAT219933D DE219933DA DE219933C DE 219933 C DE219933 C DE 219933C DE NDAT219933 D DENDAT219933 D DE NDAT219933D DE 219933D A DE219933D A DE 219933DA DE 219933 C DE219933 C DE 219933C
Authority
DE
Germany
Prior art keywords
nitrogen
compounds
hydrogen
carbon filament
filament lamp
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.)
Active
Application number
DENDAT219933D
Other languages
German (de)
English (en)
Publication of DE219933C publication Critical patent/DE219933C/de
Active legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
    • H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering

Landscapes

  • Carbon And Carbon Compounds (AREA)
DENDAT219933D Active DE219933C (enExample)

Publications (1)

Publication Number Publication Date
DE219933C true DE219933C (enExample)

Family

ID=481021

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT219933D Active DE219933C (enExample)

Country Status (1)

Country Link
DE (1) DE219933C (enExample)

Similar Documents

Publication Publication Date Title
WO2022015888A3 (en) Porous carbon materials, nanoparticles, methods of making same, and uses thereof
GR3001890T3 (en) Mixed nitride layers with at least two metals and method for their manufacture
CA2050701A1 (en) Modified carbon molecular sieve adsorbents
EP0012449B1 (de) Verwendung einer Vorrichtung zur Abtrennung und Anreicherung eines Wasserstoffisotops aus einem Wasserstoffisotopengemisch
DE219933C (enExample)
EP0374615A3 (de) Verfahren zur Abtrennung von metallorganischen Verbindungen und/oder Metallcarbonylen aus ihren Lösungen in organischen Medien
DE235133C (enExample)
KR940019878A (ko) 금색장식부품과 그 제조방법
Johnson et al. Adsorption of hydrazine and ammonia on aluminium
DE60008457T2 (de) Verfahren und Vorrichtung zur Zerlegung einer Gasmischung durch Tieftemperaturdistillation
Dai et al. Ionization energies of Yn (n= 1− 4)
DE3926015A1 (de) Verfahren zur feinreinigung von gasen
GR76382B (enExample)
DE2261234C3 (de) Verfahren zur Gewinnung von reinem Stickstoff
DE242657C (enExample)
GB742379A (en) Method of making sintered electrodes for electrolytic condensers
DE2409416A1 (de) Elektrische gluehlampen und verfahren zu ihrer herstellung
DE349275C (de) Kohlenfadengluehlampe mit Gasfuellung
AT47102B (de) Verfahren zur Verhütung des Zerstäubens von Metallfäden in elektrischen Glühlampen.
DE340987C (de) Verfahren zur Gewinnung von Argon
Corrington Nature and Spirit (Book Review)
AT73741B (de) Elektrische Glühlampe mit Metallglühkörper und den Faden nicht angreifender Gasfüllung von hohem Druck.
GB190413161A (en) Improvements in the Manufacture of Filaments for Incandescent Lamps.
Alov et al. XPS study of surfaces of plasma modified gas-separating polymeric membranes
JPS6475016A (en) Manufacture of filter film