GB402664A - Improvements in or relating to incandescent electric lamps - Google Patents
Improvements in or relating to incandescent electric lampsInfo
- Publication number
- GB402664A GB402664A GB11700/33A GB1170033A GB402664A GB 402664 A GB402664 A GB 402664A GB 11700/33 A GB11700/33 A GB 11700/33A GB 1170033 A GB1170033 A GB 1170033A GB 402664 A GB402664 A GB 402664A
- Authority
- GB
- United Kingdom
- Prior art keywords
- elements
- filament
- tube
- mica
- another modification
- 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
- 230000004048 modification Effects 0.000 abstract 4
- 238000012986 modification Methods 0.000 abstract 4
- 239000010445 mica Substances 0.000 abstract 3
- 229910052618 mica group Inorganic materials 0.000 abstract 3
- 230000000717 retained effect Effects 0.000 abstract 2
- 210000002105 tongue Anatomy 0.000 abstract 2
- 238000007689 inspection Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/18—Mountings or supports for the incandescent body
- H01K1/24—Mounts for lamps with connections at opposite ends, e.g. for tubular lamp
Landscapes
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Connecting Device With Holders (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR622233X | 1933-05-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB402664A true GB402664A (en) | 1933-12-07 |
Family
ID=8985692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11700/33A Expired GB402664A (en) | 1933-05-12 | 1933-04-21 | Improvements in or relating to incandescent electric lamps |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1997975A (fr) |
| BE (1) | BE395662A (fr) |
| DE (1) | DE622233C (fr) |
| FR (1) | FR736998A (fr) |
| GB (1) | GB402664A (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1449851A (en) * | 1973-07-10 | 1976-09-15 | Thorn Electrical Ind Ltd | Electrical incandescent filament devices |
-
0
- BE BE395662D patent/BE395662A/xx unknown
- US US1997975D patent/US1997975A/en not_active Expired - Lifetime
-
1932
- 1932-05-12 FR FR736998D patent/FR736998A/fr not_active Expired
-
1933
- 1933-04-21 GB GB11700/33A patent/GB402664A/en not_active Expired
- 1933-04-21 DE DEP67416D patent/DE622233C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE622233C (de) | 1935-11-23 |
| FR736998A (fr) | 1932-12-05 |
| BE395662A (fr) | |
| US1997975A (en) | 1935-04-16 |
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