GB309573A - - Google Patents
Info
- Publication number
- GB309573A GB309573A GB8043/29A GB804329A GB309573A GB 309573 A GB309573 A GB 309573A GB 8043/29 A GB8043/29 A GB 8043/29A GB 804329 A GB804329 A GB 804329A GB 309573 A GB309573 A GB 309573A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thoria
- gloeilampenfabrieken
- recrystallized
- diffuse
- 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
Links
- ZCUFMDLYAMJYST-UHFFFAOYSA-N thorium dioxide Chemical compound O=[Th]=O ZCUFMDLYAMJYST-UHFFFAOYSA-N 0.000 abstract 2
- 230000004913 activation Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910000765 intermetallic Inorganic materials 0.000 abstract 1
- 238000001953 recrystallisation Methods 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
- H01K3/02—Manufacture of incandescent bodies
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Discharge Lamp (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Metal Extraction Processes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL309573T | 1928-04-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB309573A true GB309573A (enrdf_load_stackoverflow) | 1929-11-21 |
Family
ID=31944929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8043/29A Expired GB309573A (enrdf_load_stackoverflow) | 1928-04-13 | 1929-03-12 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE496847C (enrdf_load_stackoverflow) |
| FR (1) | FR671441A (enrdf_load_stackoverflow) |
| GB (1) | GB309573A (enrdf_load_stackoverflow) |
| NL (1) | NL25673C (enrdf_load_stackoverflow) |
-
0
- NL NL25673D patent/NL25673C/xx active
-
1929
- 1929-03-12 DE DEN30035D patent/DE496847C/de not_active Expired
- 1929-03-12 GB GB8043/29A patent/GB309573A/en not_active Expired
- 1929-03-13 FR FR671441D patent/FR671441A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL25673C (enrdf_load_stackoverflow) | |
| DE496847C (de) | 1930-04-28 |
| FR671441A (fr) | 1929-12-12 |
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