GB9923939D0 - Filter and preheater - Google Patents
Filter and preheaterInfo
- Publication number
- GB9923939D0 GB9923939D0 GBGB9923939.4A GB9923939A GB9923939D0 GB 9923939 D0 GB9923939 D0 GB 9923939D0 GB 9923939 A GB9923939 A GB 9923939A GB 9923939 D0 GB9923939 D0 GB 9923939D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- preheater
- filter
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B1/00—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways
- G09B1/02—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements
- G09B1/04—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a single symbol or a single combination of symbols
- G09B1/06—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a single symbol or a single combination of symbols and being attachable to, or mounted on, the support
- G09B1/08—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a single symbol or a single combination of symbols and being attachable to, or mounted on, the support by means of magnets
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/02—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Business, Economics & Management (AREA)
- Computational Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Algebra (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9918786.6A GB9918786D0 (en) | 1999-08-03 | 1999-08-10 | Teaching aid |
Publications (2)
Publication Number | Publication Date |
---|---|
GB9923939D0 true GB9923939D0 (en) | 1999-12-08 |
GB2352978A GB2352978A (en) | 2001-02-14 |
Family
ID=10858869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9923939A Withdrawn GB2352978A (en) | 1999-08-10 | 1999-10-08 | Filter and preheater |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2352978A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT501354A3 (en) | 2004-08-19 | 2006-12-15 | Donauwind Erneuerbare Energieg | RESPIRATOR |
DE102021000354B4 (en) | 2020-03-20 | 2023-12-21 | Kastriot Merlaku | Respiratory protection or face mask filter with UV rays or light beam technology |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB871661A (en) * | 1958-02-28 | 1961-06-28 | Robinson & Sons Ltd | An improved face mask |
GB850712A (en) * | 1958-04-29 | 1960-10-05 | Alexander Carus & Sons Ltd | Improvements in or relating to surgical face masks |
GB984574A (en) * | 1961-08-29 | 1965-02-24 | Alexander Richardson Harland | Improvements in or relating to face masks |
US3603315A (en) * | 1969-10-17 | 1971-09-07 | American Hospital Supply Corp | Surgical face mask |
US3884227A (en) * | 1973-01-29 | 1975-05-20 | Blessings Products Inc | Disposable surgical mask |
US4014047A (en) * | 1974-12-20 | 1977-03-29 | Zobel James W | Face mask |
US4354489A (en) * | 1979-04-16 | 1982-10-19 | Florence Riaboy | Individual nose and mouth filters |
US4240420A (en) * | 1979-04-16 | 1980-12-23 | Florence Riaboy | Nose and mouth filter combination |
SE445299B (en) * | 1984-01-11 | 1986-06-16 | Flodins Filter Ab | RESPIRATORY |
JPH10192430A (en) * | 1997-01-16 | 1998-07-28 | Shuji Watanabe | Folding method of solid mask |
-
1999
- 1999-10-08 GB GB9923939A patent/GB2352978A/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
GB2352978A (en) | 2001-02-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |