FR720828A - Improvements to incandescent electric lamps and discharge tubes - Google Patents
Improvements to incandescent electric lamps and discharge tubesInfo
- Publication number
- FR720828A FR720828A FR720828DA FR720828A FR 720828 A FR720828 A FR 720828A FR 720828D A FR720828D A FR 720828DA FR 720828 A FR720828 A FR 720828A
- Authority
- FR
- France
- Prior art keywords
- discharge tubes
- electric lamps
- incandescent electric
- incandescent
- lamps
- 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
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
- H01K1/46—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp supported by a separate part, e.g. base, cap
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL381637X | 1930-08-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR720828A true FR720828A (en) | 1932-02-24 |
Family
ID=19785657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR720828D Expired FR720828A (en) | 1930-08-07 | 1931-07-29 | Improvements to incandescent electric lamps and discharge tubes |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE381643A (en) |
DE (1) | DE583222C (en) |
FR (1) | FR720828A (en) |
GB (1) | GB381637A (en) |
NL (1) | NL32109C (en) |
-
0
- BE BE381643D patent/BE381643A/xx unknown
- NL NL32109D patent/NL32109C/xx active
-
1930
- 1930-08-12 DE DE1930583222D patent/DE583222C/en not_active Expired
-
1931
- 1931-07-28 GB GB21528/31A patent/GB381637A/en not_active Expired
- 1931-07-29 FR FR720828D patent/FR720828A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE381643A (en) | |
GB381637A (en) | 1932-10-13 |
DE583222C (en) | 1933-08-30 |
NL32109C (en) |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR630354A (en) | Improvements to incandescent electric lamps | |
FR775464A (en) | Improvements to incandescent electric lamps | |
FR765855A (en) | Base and corresponding socket for electric discharge tubes or incandescent lamps | |
FR677066A (en) | Improvements to incandescent electric lamps | |
FR720828A (en) | Improvements to incandescent electric lamps and discharge tubes | |
FR850714A (en) | Improvements to tubular incandescent electric lamps and electric discharge tubes | |
FR705272A (en) | Improvements to incandescent electric lamps or discharge tubes | |
FR660796A (en) | Improvement in incandescent lamps | |
FR705337A (en) | Improvements made to incandescent electric lamps and discharge tubes | |
FR666477A (en) | Improvements to incandescent lamps and their mounts | |
FR763732A (en) | Improvements to incandescent electric lamps or discharge tubes | |
FR702874A (en) | Incandescent lamp improvements | |
FR665272A (en) | Improvements to incandescent electric lamps and their supports | |
FR747957A (en) | Improvements to incandescent electric lamps | |
FR712539A (en) | Improvements to incandescent electric lamps | |
FR757340A (en) | Improvements to incandescent electric lamps | |
FR694864A (en) | Improvements to incandescent discharge lamps | |
FR840585A (en) | Improvements to incandescent electric lamps and discharge tubes | |
FR801118A (en) | Improvements to incandescent electric lamps | |
FR716157A (en) | Improvements to incandescent lamp sockets | |
FR830241A (en) | Improvements to incandescent electric lamps | |
FR717894A (en) | Improvements to incandescent electric lamps | |
FR756633A (en) | Improvements to incandescent electric lamps | |
FR763213A (en) | Improvements to incandescent electric lamps | |
FR676233A (en) | Improvements to incandescent electric lamps |