NL88621C - - Google Patents
Info
- Publication number
- NL88621C NL88621C NL88621DA NL88621C NL 88621 C NL88621 C NL 88621C NL 88621D A NL88621D A NL 88621DA NL 88621 C NL88621 C NL 88621C
- Authority
- NL
- Netherlands
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/08—Cap joints for obtaining a coal-face free of pit-props
- E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Emergency Lowering Means (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1951A0014650 DE975231C (en) | 1951-12-05 | 1951-12-05 | Articulated cap connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL88621C true NL88621C (en) |
Family
ID=6923259
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NLAANVRAGE7209868,A NL174344B (en) | 1951-12-05 | PROCESS FOR PREPARING A MIXTURE OF CATECHOL AND HYDROQUINONE. | |
| NL88621D NL88621C (en) | 1951-12-05 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NLAANVRAGE7209868,A NL174344B (en) | 1951-12-05 | PROCESS FOR PREPARING A MIXTURE OF CATECHOL AND HYDROQUINONE. |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE975231C (en) |
| FR (1) | FR1067366A (en) |
| GB (1) | GB712963A (en) |
| NL (2) | NL88621C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE942322C (en) * | 1954-03-16 | 1956-05-03 | Ulrich Wichmann | Articulated connection of caps |
| US2915328A (en) * | 1957-07-08 | 1959-12-01 | Hugh Wood And Company Ltd | Bars for supporting the roof in mines and for like purposes |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE481680A (en) * | ||||
| BE475032A (en) * | 1946-08-28 | |||
| DE803992C (en) * | 1949-07-03 | 1951-04-16 | Wilhelm Reppel | Cap made of juxtaposed links for mining, especially longwall mining |
| DE801717C (en) * | 1949-07-12 | 1951-01-22 | Mannesmann Ag | Cap connector |
-
0
- NL NLAANVRAGE7209868,A patent/NL174344B/en unknown
- NL NL88621D patent/NL88621C/xx active
-
1951
- 1951-12-05 DE DE1951A0014650 patent/DE975231C/en not_active Expired
-
1952
- 1952-12-02 FR FR1067366D patent/FR1067366A/en not_active Expired
- 1952-12-03 GB GB3066152A patent/GB712963A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB712963A (en) | 1954-08-04 |
| NL174344B (en) | |
| FR1067366A (en) | 1954-06-15 |
| DE975231C (en) | 1961-10-12 |