FR222560A - - Google Patents
Info
- Publication number
- FR222560A FR222560A FR222560DA FR222560A FR 222560 A FR222560 A FR 222560A FR 222560D A FR222560D A FR 222560DA FR 222560 A FR222560 A FR 222560A
- Authority
- FR
- France
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/30—Envelopes; Vessels incorporating lenses
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8025268 | 1968-11-04 | ||
| JP9751768U JPS472552Y1 (en) | 1968-11-11 | 1968-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR222560A true FR222560A (en) |
Family
ID=26421290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR222560D Active FR222560A (en) | 1968-11-04 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3652892A (en) |
| DE (1) | DE1955421A1 (en) |
| FR (1) | FR222560A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4656386A (en) * | 1985-03-13 | 1987-04-07 | General Electric Company | R lamp having an improved dome portion for increasing the useful light output |
| WO2011030335A2 (en) | 2009-09-10 | 2011-03-17 | Yosef Shterenberg | Light bulbs with surface patterns |
| EP3678160A1 (en) * | 2018-10-19 | 2020-07-08 | Duraluce di Coianiz Fabio | Lamp with shielding in form of text or graphical symbols |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR421040A (en) * | 1909-10-04 | 1911-02-13 | Ernest Leon Frenot | Reflector for light bulbs |
| GB425485A (en) * | 1933-09-15 | 1935-03-15 | Bertram Bernard Fenn | Improvements in or relating to incandescent electric lamps |
| US2973451A (en) * | 1959-09-03 | 1961-02-28 | Westinghouse Electric Corp | Electric lamp |
| GB1082841A (en) * | 1964-08-14 | 1967-09-13 | Gen Electric Co Ltd | Improvements in or relating to electric lamps having vitreous silica envelopes |
-
0
- FR FR222560D patent/FR222560A/fr active Active
-
1969
- 1969-11-03 US US873517A patent/US3652892A/en not_active Expired - Lifetime
- 1969-11-04 DE DE19691955421 patent/DE1955421A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US3652892A (en) | 1972-03-28 |
| DE1955421A1 (en) | 1970-07-16 |