BE429854A - - Google Patents
Info
- Publication number
- BE429854A BE429854A BE429854DA BE429854A BE 429854 A BE429854 A BE 429854A BE 429854D A BE429854D A BE 429854DA BE 429854 A BE429854 A BE 429854A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/02—Details
- H01J37/20—Means for supporting or positioning the objects or the material; Means for adjusting diaphragms or lenses associated with the support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/02—Details
- H01J37/18—Vacuum locks ; Means for obtaining or maintaining the desired pressure within the vessel
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Electron Sources, Ion Sources (AREA)
- Microscoopes, Condenser (AREA)
- Sampling And Sample Adjustment (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE518317X | 1937-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE429854A true BE429854A (en) |
Family
ID=6549931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE429854D BE429854A (en) | 1937-08-24 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2215794A (en) |
| BE (1) | BE429854A (en) |
| FR (1) | FR842484A (en) |
| GB (1) | GB518317A (en) |
| NL (1) | NL54222C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR964837A (en) * | 1942-12-01 | 1950-08-25 | ||
| NL75362C (en) * | 1946-08-30 | |||
| US3833018A (en) * | 1973-02-21 | 1974-09-03 | Pass Port Syst Corp | Low leakage vacuum valve and chamber using same |
-
0
- BE BE429854D patent/BE429854A/xx unknown
- NL NL54222D patent/NL54222C/xx active
-
1938
- 1938-08-20 US US225915A patent/US2215794A/en not_active Expired - Lifetime
- 1938-08-22 GB GB24688/38A patent/GB518317A/en not_active Expired
- 1938-08-23 FR FR842484D patent/FR842484A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB518317A (en) | 1940-02-23 |
| FR842484A (en) | 1939-06-13 |
| NL54222C (en) | |
| US2215794A (en) | 1940-09-24 |