NL23840C - - Google Patents
Info
- Publication number
- NL23840C NL23840C NL23840DA NL23840C NL 23840 C NL23840 C NL 23840C NL 23840D A NL23840D A NL 23840DA NL 23840 C NL23840 C NL 23840C
- Authority
- NL
- Netherlands
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
- H01K9/04—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies with built-in manually operated switch
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR35142T | 1928-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL23840C true NL23840C (en) |
Family
ID=8672058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL23840D NL23840C (en) | 1928-03-31 |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH143844A (en) |
| FR (2) | FR648165A (en) |
| GB (1) | GB291372A (en) |
| NL (1) | NL23840C (en) |
-
0
- NL NL23840D patent/NL23840C/xx active
-
1927
- 1927-05-31 FR FR648165D patent/FR648165A/en not_active Expired
-
1928
- 1928-03-31 FR FR35142D patent/FR35142E/en not_active Expired
- 1928-04-19 GB GB11573/28A patent/GB291372A/en not_active Expired
- 1928-09-14 CH CH143844D patent/CH143844A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR648165A (en) | 1928-12-06 |
| GB291372A (en) | 1929-01-10 |
| CH143844A (en) | 1930-11-30 |
| FR35142E (en) | 1929-12-03 |