FR738449A - - Google Patents
Info
- Publication number
- FR738449A FR738449A FR738449DA FR738449A FR 738449 A FR738449 A FR 738449A FR 738449D A FR738449D A FR 738449DA FR 738449 A FR738449 A FR 738449A
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US550436A US1932235A (en) | 1931-07-13 | 1931-07-13 | Telephone system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR738449A true FR738449A (forum.php) | 1932-12-24 |
Family
ID=24197184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR738449D Expired FR738449A (forum.php) | 1931-07-13 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1932235A (forum.php) |
| FR (1) | FR738449A (forum.php) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE969164C (de) * | 1943-06-12 | 1958-05-08 | Siemens Ag | Schaltungsanordnung fuer durch anrufende Teilnehmer im Falle des Besetztfindens des gewuenschten Teilnehmers einschaltbare Warteeinrichtungen |
-
0
- FR FR738449D patent/FR738449A/fr not_active Expired
-
1931
- 1931-07-13 US US550436A patent/US1932235A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1932235A (en) | 1933-10-24 |