GB9923939D0 - Filter and preheater - Google Patents

Filter and preheater

Info

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Withdrawn
Application number
GBGB9923939.4A
Other versions
GB2352978A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TUCKWELL KENNETH R
Original Assignee
TUCKWELL KENNETH R
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GBGB9918786.6A external-priority patent/GB9918786D0/en
Application filed by TUCKWELL KENNETH R filed Critical TUCKWELL KENNETH R
Publication of GB9923939D0 publication Critical patent/GB9923939D0/en
Publication of GB2352978A publication Critical patent/GB2352978A/en
Withdrawn legal-status Critical Current

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
GB9923939A 1999-08-10 1999-10-08 Filter and preheater Withdrawn GB2352978A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
US4240420A (en) * 1979-04-16 1980-12-23 Florence Riaboy Nose and mouth filter combination
US4354489A (en) * 1979-04-16 1982-10-19 Florence Riaboy Individual nose and mouth filters
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

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)