NL54277C - - Google Patents
Info
- Publication number
- NL54277C NL54277C NL54277DA NL54277C NL 54277 C NL54277 C NL 54277C NL 54277D A NL54277D A NL 54277DA NL 54277 C NL54277 C NL 54277C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/40—Closing vessels
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Resistance Heating (AREA)
- Joining Of Glass To Other Materials (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB29913/38A GB519355A (en) | 1938-10-15 | 1938-10-15 | Improvements in and relating to methods of hermetically sealing vitreous or ceramic vessels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL54277C true NL54277C (fr) |
Family
ID=10299234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL54277D NL54277C (fr) | 1938-10-15 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2169112A (fr) |
| DE (1) | DE701250C (fr) |
| FR (1) | FR860870A (fr) |
| GB (1) | GB519355A (fr) |
| NL (1) | NL54277C (fr) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2473860A (en) * | 1946-11-09 | 1949-06-21 | Gen Electric | Internal exhaust seal for electric lamps and similar devices |
| GB694672A (en) * | 1951-02-23 | 1953-07-22 | Hivac Ltd | Improvements in or relating to electric incandescent lamps |
| US2664517A (en) * | 1952-02-27 | 1953-12-29 | Westinghouse Electric Corp | Tipless quartz lamp |
| US2889670A (en) * | 1954-04-21 | 1959-06-09 | Nat Union Electric Corp | Method of manufacturing an electron tube |
| US3351802A (en) * | 1964-06-12 | 1967-11-07 | Sylvania Electric Prod | Single ended, quartz type incandescent lamp |
| TWM272222U (en) * | 2005-02-14 | 2005-08-01 | Hung Mian Light Source Co Ltd | Power-saving bulb |
-
0
- NL NL54277D patent/NL54277C/xx active
-
1938
- 1938-10-15 GB GB29913/38A patent/GB519355A/en not_active Expired
-
1939
- 1939-03-22 US US263358A patent/US2169112A/en not_active Expired - Lifetime
- 1939-09-28 DE DE1939P0079814 patent/DE701250C/de not_active Expired
- 1939-10-16 FR FR860870D patent/FR860870A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE701250C (de) | 1941-01-11 |
| FR860870A (fr) | 1941-01-25 |
| GB519355A (en) | 1940-03-21 |
| US2169112A (en) | 1939-08-08 |