NL40027C - - Google Patents
Info
- Publication number
- NL40027C NL40027C NL40027DA NL40027C NL 40027 C NL40027 C NL 40027C NL 40027D A NL40027D A NL 40027DA NL 40027 C NL40027 C NL 40027C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/20—Mineral freed by means not involving slitting
- E21C27/28—Mineral freed by means not involving slitting by percussive drills with breaking-down means, e.g. wedge-shaped tools
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE429095X | 1932-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL40027C true NL40027C (en) |
Family
ID=6477562
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL67333D NL67333C (en) | 1932-11-08 | ||
| NL40027D NL40027C (en) | 1932-11-08 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL67333D NL67333C (en) | 1932-11-08 |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR764899A (en) |
| GB (1) | GB429095A (en) |
| NL (2) | NL40027C (en) |
-
0
- NL NL67333D patent/NL67333C/xx active
- NL NL40027D patent/NL40027C/xx active
-
1933
- 1933-11-07 GB GB30959/33A patent/GB429095A/en not_active Expired
- 1933-11-07 FR FR764899D patent/FR764899A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR764899A (en) | 1934-05-29 |
| GB429095A (en) | 1935-05-24 |
| NL67333C (en) |