BE612439A - - Google Patents
Info
- Publication number
- BE612439A BE612439A BE612439DA BE612439A BE 612439 A BE612439 A BE 612439A BE 612439D A BE612439D A BE 612439DA BE 612439 A BE612439 A BE 612439A
- Authority
- BE
- Belgium
Links
Classifications
-
- 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
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- 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
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- 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
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- 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)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9418A US3038801A (en) | 1960-02-18 | 1960-02-18 | Photographic pyrazolidone developers in non-aqueous organic solvents |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE612439A true BE612439A (US07122603-20061017-C00145.png) | 1962-05-02 |
Family
ID=45804253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE612439D BE612439A (US07122603-20061017-C00145.png) | 1960-02-18 | 1962-01-09 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3038801A (US07122603-20061017-C00145.png) |
| BE (1) | BE612439A (US07122603-20061017-C00145.png) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE633195A (US07122603-20061017-C00145.png) * | 1962-06-07 | |||
| US3438776A (en) * | 1964-12-28 | 1969-04-15 | Eastman Kodak Co | Non-aqueous silver halide photographic process |
| GB1154365A (en) * | 1965-10-07 | 1969-06-04 | May & Baker Ltd | Photographic Silver Halide Developer Packs |
| GB8430328D0 (en) * | 1984-11-30 | 1985-01-09 | Ciba Geigy Ag | Developer compositions |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB542502A (en) * | 1940-07-10 | 1942-01-13 | John David Kendall | Improvements in or relating to photographic development processes |
| GB650911A (en) * | 1948-08-16 | 1951-03-07 | Ilford Ltd | Improvements in or relating to 3-pyrazolidone compounds |
-
1960
- 1960-02-18 US US9418A patent/US3038801A/en not_active Expired - Lifetime
-
1962
- 1962-01-09 BE BE612439D patent/BE612439A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US3038801A (en) | 1962-06-12 |
