NL58180C - - Google Patents
Info
- Publication number
- NL58180C NL58180C NL58180DA NL58180C NL 58180 C NL58180 C NL 58180C NL 58180D A NL58180D A NL 58180DA NL 58180 C NL58180 C NL 58180C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/02—Manually-operated control
- H03G5/04—Manually-operated control in untuned amplifiers
- H03G5/06—Manually-operated control in untuned amplifiers having discharge tubes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/001—Two-way communication systems between a limited number of parties
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL247563X | 1943-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL58180C true NL58180C (nl) |
Family
ID=19780914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL58180D NL58180C (nl) | 1943-02-18 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE454425A (nl) |
| CH (1) | CH247563A (nl) |
| FR (1) | FR904080A (nl) |
| NL (1) | NL58180C (nl) |
-
0
- BE BE454425D patent/BE454425A/xx unknown
- NL NL58180D patent/NL58180C/xx active
-
1944
- 1944-02-17 FR FR904080D patent/FR904080A/fr not_active Expired
- 1944-02-18 CH CH247563D patent/CH247563A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR904080A (fr) | 1945-10-25 |
| BE454425A (nl) | |
| CH247563A (de) | 1947-03-15 |