NL28930C - - Google Patents
Info
- Publication number
- NL28930C NL28930C NL28930DA NL28930C NL 28930 C NL28930 C NL 28930C NL 28930D A NL28930D A NL 28930DA NL 28930 C NL28930 C NL 28930C
- 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
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
- H01J9/042—Manufacture, activation of the emissive part
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/0006—Article or web delivery apparatus incorporating cutting or line-perforating devices
- B65H35/006—Article or web delivery apparatus incorporating cutting or line-perforating devices with means for delivering a predetermined length of tape
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
- Paints Or Removers (AREA)
- Discharge Lamp (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US294326A US1842161A (en) | 1928-07-20 | 1928-07-20 | Electron emission material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL28930C true NL28930C (en) |
Family
ID=23132929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL28930D NL28930C (en) | 1928-07-20 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US1842161A (en) |
| BE (1) | BE362221A (en) |
| DE (1) | DE521050C (en) |
| FR (1) | FR678731A (en) |
| GB (1) | GB316104A (en) |
| NL (1) | NL28930C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE745742C (en) * | 1937-03-09 | 1944-03-31 | Elek Zitaets Ag | Process for the manufacture of oxide cathodes |
| US2600112A (en) * | 1948-06-30 | 1952-06-10 | Sylvania Electric Prod | Electron emitter |
| US2673387A (en) * | 1951-05-18 | 1954-03-30 | Gen Electric | Electron emission coating mixtures |
| US2985548A (en) * | 1957-12-26 | 1961-05-23 | Sylvania Electric Prod | Method of making a low density coating for an electron discharge device |
| US4359489A (en) * | 1981-03-18 | 1982-11-16 | Corneille David M | Coprecipitation process for thermionic cathode type materials |
| US4411827A (en) * | 1981-03-18 | 1983-10-25 | Corneille David M | Coprecipitation process for thermionic cathode type materials |
-
0
- NL NL28930D patent/NL28930C/xx active
- BE BE362221D patent/BE362221A/xx unknown
-
1928
- 1928-07-20 US US294326A patent/US1842161A/en not_active Expired - Lifetime
-
1929
- 1929-07-18 FR FR678731D patent/FR678731A/en not_active Expired
- 1929-07-19 DE DEW83232D patent/DE521050C/en not_active Expired
- 1929-07-22 GB GB22507/29A patent/GB316104A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE521050C (en) | 1931-03-16 |
| US1842161A (en) | 1932-01-19 |
| GB316104A (en) | 1930-09-25 |
| BE362221A (en) | |
| FR678731A (en) | 1930-04-03 |