GB202228A - Improvements in the manufacture of electric incandescent lamps, and thermionic valves - Google Patents
Improvements in the manufacture of electric incandescent lamps, and thermionic valvesInfo
- Publication number
- GB202228A GB202228A GB259223A GB259223A GB202228A GB 202228 A GB202228 A GB 202228A GB 259223 A GB259223 A GB 259223A GB 259223 A GB259223 A GB 259223A GB 202228 A GB202228 A GB 202228A
- Authority
- GB
- United Kingdom
- Prior art keywords
- manufacture
- incandescent lamps
- electric incandescent
- thermionic valves
- container
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
- H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
- H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
- H01J7/183—Composition or manufacture of getters
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Radiation-Therapy Devices (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
Abstract
202,228. Osborn, H. J. Jan. 29, 1923. Vacuum tubes.- Lamp black or other carbonaceous material is placed on a leading-in wire, and a metallic oxide, e.g. manganese oxide or black copper oxide, is placed elsewhere in the container, and the tube is aged by the application of direct current, whereby the carbonaceous material is heated and combines with residual oxygen in the container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB259223A GB202228A (en) | 1923-01-29 | 1923-01-29 | Improvements in the manufacture of electric incandescent lamps, and thermionic valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB259223A GB202228A (en) | 1923-01-29 | 1923-01-29 | Improvements in the manufacture of electric incandescent lamps, and thermionic valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB202228A true GB202228A (en) | 1923-08-16 |
Family
ID=9742273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB259223A Expired GB202228A (en) | 1923-01-29 | 1923-01-29 | Improvements in the manufacture of electric incandescent lamps, and thermionic valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB202228A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997029503A1 (en) * | 1996-02-09 | 1997-08-14 | Saes Getters S.P.A. | Combination of materials for the low temperature triggering of the activation of getter materials and getter devices containing the same |
-
1923
- 1923-01-29 GB GB259223A patent/GB202228A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997029503A1 (en) * | 1996-02-09 | 1997-08-14 | Saes Getters S.P.A. | Combination of materials for the low temperature triggering of the activation of getter materials and getter devices containing the same |
| EP1160820A1 (en) * | 1996-02-09 | 2001-12-05 | SAES GETTERS S.p.A. | Combination of materials for the low temperature triggering of the activation of getter materials and getter devices containing the same |
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