FR773117A - Lampes de signalisation - Google Patents
Lampes de signalisationInfo
- Publication number
- FR773117A FR773117A FR773117DA FR773117A FR 773117 A FR773117 A FR 773117A FR 773117D A FR773117D A FR 773117DA FR 773117 A FR773117 A FR 773117A
- Authority
- FR
- France
- Prior art keywords
- signal lamps
- lamps
- signal
- 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
- H01K9/00—Lamps having two or more incandescent bodies separately heated
- H01K9/02—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/26—Screens; Filters
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US670448A US2060637A (en) | 1933-05-11 | 1933-05-11 | Signal lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
FR773117A true FR773117A (fr) | 1934-11-12 |
Family
ID=24690437
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR773117D Expired FR773117A (fr) | 1933-05-11 | 1934-05-09 | Lampes de signalisation |
Country Status (3)
Country | Link |
---|---|
US (1) | US2060637A (fr) |
FR (1) | FR773117A (fr) |
GB (1) | GB417986A (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3074013A (en) * | 1958-09-23 | 1963-01-15 | Roy N Bowden | Device for indicating short circuits |
GB2170040A (en) * | 1985-01-23 | 1986-07-23 | Walter Anderson | Improved light bulbs |
-
1933
- 1933-05-11 US US670448A patent/US2060637A/en not_active Expired - Lifetime
-
1934
- 1934-05-09 FR FR773117D patent/FR773117A/fr not_active Expired
- 1934-05-10 GB GB14176/34A patent/GB417986A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB417986A (en) | 1934-10-16 |
US2060637A (en) | 1936-11-10 |
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