NL42973C - - Google Patents
Info
- Publication number
- NL42973C NL42973C NL42973DA NL42973C NL 42973 C NL42973 C NL 42973C NL 42973D A NL42973D A NL 42973DA NL 42973 C NL42973 C NL 42973C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/46—Circuits providing for substitution in case of failure of the lamp
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/96—Lamps with light-emitting discharge path and separately-heated incandescent body within a common envelope, e.g. for simulating daylight
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB35343/34A GB447428A (en) | 1934-12-08 | 1934-12-08 | Improvements relating to electric lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL42973C true NL42973C (sv) |
Family
ID=10376670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL42973D NL42973C (sv) | 1934-12-08 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2112993A (sv) |
| BE (1) | BE412488A (sv) |
| DE (1) | DE679111C (sv) |
| GB (1) | GB447428A (sv) |
| NL (1) | NL42973C (sv) |
-
0
- BE BE412488D patent/BE412488A/xx unknown
- NL NL42973D patent/NL42973C/xx active
-
1934
- 1934-12-08 GB GB35343/34A patent/GB447428A/en not_active Expired
-
1935
- 1935-11-27 US US51758A patent/US2112993A/en not_active Expired - Lifetime
- 1935-11-29 DE DES120616D patent/DE679111C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE679111C (de) | 1939-07-29 |
| US2112993A (en) | 1938-04-05 |
| BE412488A (sv) | |
| GB447428A (en) | 1936-05-19 |