BE370794A - - Google Patents
Info
- Publication number
- BE370794A BE370794A BE370794DA BE370794A BE 370794 A BE370794 A BE 370794A BE 370794D A BE370794D A BE 370794DA BE 370794 A BE370794 A BE 370794A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/06—Constructional features of mixers for pig-iron
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/10—Metering calls from calling party, i.e. A-party charged for the communication
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Computer Networks & Wireless Communication (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Signal Processing (AREA)
- Meter Arrangements (AREA)
- Relay Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US367996A US1810330A (en) | 1929-06-03 | 1929-06-03 | Zone metering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE370794A true BE370794A (fr) |
Family
ID=23449451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE370794D BE370794A (fr) | 1929-06-03 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1810330A (fr) |
| BE (1) | BE370794A (fr) |
| FR (1) | FR696558A (fr) |
| GB (1) | GB354858A (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2603712A (en) * | 1940-08-26 | 1952-07-15 | Automatic Elect Lab | Party line identification in automatic telephony |
| US2763724A (en) * | 1946-10-11 | 1956-09-18 | Automatic Elect Lab | Telephone systems |
| US2682576A (en) * | 1951-01-20 | 1954-06-29 | Irving H Selden | Telephone system |
-
0
- BE BE370794D patent/BE370794A/xx unknown
-
1929
- 1929-06-03 US US367996A patent/US1810330A/en not_active Expired - Lifetime
-
1930
- 1930-05-20 GB GB15549/30A patent/GB354858A/en not_active Expired
- 1930-05-30 FR FR696558D patent/FR696558A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR696558A (fr) | 1931-01-05 |
| US1810330A (en) | 1931-06-16 |
| GB354858A (en) | 1931-08-20 |