NL25924C - - Google Patents
Info
- Publication number
- NL25924C NL25924C NL25924DA NL25924C NL 25924 C NL25924 C NL 25924C NL 25924D A NL25924D A NL 25924DA NL 25924 C NL25924 C NL 25924C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/64—Contacts
- H01H37/68—Contacts sealed in evacuated or gas-filled tube
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/16—Connecting or disconnecting pipe couplings or joints
- E21B19/161—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Thermally Actuated Switches (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE287453X | 1927-03-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL25924C true NL25924C (de) |
Family
ID=20307149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL25924D NL25924C (de) | 1927-03-19 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE504836C (de) |
| FR (1) | FR650907A (de) |
| GB (1) | GB287453A (de) |
| NL (1) | NL25924C (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USB354822I5 (de) * | 1956-07-19 | |||
| DE2727994C2 (de) * | 1977-06-22 | 1986-02-13 | Lothar Dr. Dipl.Kaufm. Dipl.-Handelsl. 5030 Hürth Wurzer | Absperrventil |
| DE4238767A1 (de) * | 1992-11-12 | 1994-05-19 | Siemens Ag | Vakuumrelais |
-
0
- NL NL25924D patent/NL25924C/xx active
-
1927
- 1927-12-07 DE DEA52654D patent/DE504836C/de not_active Expired
-
1928
- 1928-03-13 GB GB7742/28A patent/GB287453A/en not_active Expired
- 1928-03-16 FR FR650907D patent/FR650907A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB287453A (en) | 1929-02-14 |
| FR650907A (fr) | 1929-02-12 |
| DE504836C (de) | 1930-08-08 |