GB261456A - Improvements in telephone systems - Google Patents
Improvements in telephone systemsInfo
- Publication number
- GB261456A GB261456A GB20056/25A GB2005625A GB261456A GB 261456 A GB261456 A GB 261456A GB 20056/25 A GB20056/25 A GB 20056/25A GB 2005625 A GB2005625 A GB 2005625A GB 261456 A GB261456 A GB 261456A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- sequence switch
- energizes
- register
- relays
- Prior art date
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F18/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid
- C08F18/02—Esters of monocarboxylic acids
- C08F18/04—Vinyl esters
- C08F18/08—Vinyl acetate
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polyesters Or Polycarbonates (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEC37453D DE490041C (de) | 1925-11-15 | 1925-11-15 | Polymerisation von Vinylestern |
Publications (1)
Publication Number | Publication Date |
---|---|
GB261456A true GB261456A (en) | 1926-11-10 |
Family
ID=5974187
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20056/25A Expired GB261456A (en) | 1925-11-15 | 1925-08-10 | Improvements in telephone systems |
GB28642/26A Expired GB261406A (en) | 1925-11-15 | 1926-11-13 | Manufacture of polymerised vinyl esters |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB28642/26A Expired GB261406A (en) | 1925-11-15 | 1926-11-13 | Manufacture of polymerised vinyl esters |
Country Status (5)
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2492929A (en) * | 1945-12-07 | 1949-12-27 | Du Pont | Polymerization of vinyl esters in solution in dioxane, tetrahydrofuran, or tetrahydropyran |
US2525628A (en) * | 1946-08-02 | 1950-10-10 | Du Pont | Preparation of organic peroxide polymerization catalysts |
US2628222A (en) * | 1948-11-22 | 1953-02-10 | Shell Dev | Method of polymerization and products produced thereby |
US2649434A (en) * | 1950-05-27 | 1953-08-18 | Eastman Kodak Co | Polymerization of acrylonitrile in the presence of preformed polymers |
BE624202A (US06262066-20010717-C00315.png) * | 1961-10-27 |
-
0
- BE BE337677D patent/BE337677A/xx unknown
-
1925
- 1925-08-10 GB GB20056/25A patent/GB261456A/en not_active Expired
- 1925-11-15 DE DEC37453D patent/DE490041C/de not_active Expired
-
1926
- 1926-10-08 FR FR622838D patent/FR622838A/fr not_active Expired
- 1926-10-25 FR FR623645D patent/FR623645A/fr not_active Expired
- 1926-11-06 US US146841A patent/US1710825A/en not_active Expired - Lifetime
- 1926-11-12 FR FR624493D patent/FR624493A/fr not_active Expired
- 1926-11-13 GB GB28642/26A patent/GB261406A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR623645A (fr) | 1927-06-28 |
BE337677A (US06262066-20010717-C00315.png) | |
DE490041C (de) | 1930-01-23 |
US1710825A (en) | 1929-04-30 |
GB261406A (en) | 1927-08-11 |
FR624493A (fr) | 1927-07-19 |
FR622838A (fr) | 1927-06-08 |
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