NL280269A - - Google Patents
Info
- Publication number
- NL280269A NL280269A NL280269A NL280269A NL280269A NL 280269 A NL280269 A NL 280269A NL 280269 A NL280269 A NL 280269A NL 280269 A NL280269 A NL 280269A NL 280269 A NL280269 A NL 280269A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/264—Supplying of photographic processing chemicals; Preparation or packaging thereof
- G03C5/266—Supplying of photographic processing chemicals; Preparation or packaging thereof of solutions or concentrates
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/738—Interface circuits for coupling substations to external telephone lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/738—Interface circuits for coupling substations to external telephone lines
- H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9418A US3038801A (en) | 1960-02-18 | 1960-02-18 | Photographic pyrazolidone developers in non-aqueous organic solvents |
| SE681461 | 1961-06-30 | ||
| FR884315A FR1348358A (fr) | 1962-01-09 | 1962-01-09 | Perfectionnements apportés aux révélateurs photographiques |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL280269A true NL280269A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1964-12-10 |
Family
ID=31499001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL280269A NL280269A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1960-02-18 | 1962-06-28 |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH432241A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
| NL (1) | NL280269A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
-
1962
- 1962-02-08 CH CH153862A patent/CH432241A/fr unknown
- 1962-06-28 NL NL280269A patent/NL280269A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH432241A (fr) | 1967-03-15 |