NL54921C - - Google Patents
Info
- Publication number
- NL54921C NL54921C NL54921DA NL54921C NL 54921 C NL54921 C NL 54921C NL 54921D A NL54921D A NL 54921DA NL 54921 C NL54921 C NL 54921C
- 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
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes
- H01J9/125—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes of secondary emission electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2201/00—Electrodes common to discharge tubes
- H01J2201/32—Secondary emission electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Cold Cathode And The Manufacture (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL99178D DE731423C (en) | 1939-10-03 | 1939-10-03 | Process for increasing the secondary emissivity of a beryllium alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL54921C true NL54921C (en) |
Family
ID=7289070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL54921D NL54921C (en) | 1939-10-03 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE731423C (en) |
| NL (1) | NL54921C (en) |
-
0
- NL NL54921D patent/NL54921C/xx active
-
1939
- 1939-10-03 DE DEL99178D patent/DE731423C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE731423C (en) | 1943-02-09 |