SG116491A1 - Wireless blackboard eraser and dust collector. - Google Patents

Wireless blackboard eraser and dust collector.

Info

Publication number
SG116491A1
SG116491A1 SG200302352A SG200302352A SG116491A1 SG 116491 A1 SG116491 A1 SG 116491A1 SG 200302352 A SG200302352 A SG 200302352A SG 200302352 A SG200302352 A SG 200302352A SG 116491 A1 SG116491 A1 SG 116491A1
Authority
SG
Singapore
Prior art keywords
dust collector
blackboard eraser
wireless
wireless blackboard
eraser
Prior art date
Application number
SG200302352A
Inventor
Fan Chen-Lang
Original Assignee
Fan Chen Lang
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
Application filed by Fan Chen Lang filed Critical Fan Chen Lang
Priority to SG200302352A priority Critical patent/SG116491A1/en
Publication of SG116491A1 publication Critical patent/SG116491A1/en

Links

SG200302352A 2003-04-24 2003-04-24 Wireless blackboard eraser and dust collector. SG116491A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SG200302352A SG116491A1 (en) 2003-04-24 2003-04-24 Wireless blackboard eraser and dust collector.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SG200302352A SG116491A1 (en) 2003-04-24 2003-04-24 Wireless blackboard eraser and dust collector.

Publications (1)

Publication Number Publication Date
SG116491A1 true SG116491A1 (en) 2005-11-28

Family

ID=35542880

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200302352A SG116491A1 (en) 2003-04-24 2003-04-24 Wireless blackboard eraser and dust collector.

Country Status (1)

Country Link
SG (1) SG116491A1 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1801620A (en) * 1928-06-11 1931-04-21 Sanford S Bettman Vacuum board eraser
FR1184699A (en) * 1957-09-13 1959-07-24 Device for erasing blackboards with absorption of chalk dust
GB910383A (en) * 1960-02-29 1962-11-14 Salo David Rand Improvements in or relating to vacuum cleaners
US4204298A (en) * 1977-11-18 1980-05-27 Hiroyuki Handa Compact vacuum cleaner
FR2573699A1 (en) * 1984-11-28 1986-05-30 Lobez Sagues Manuel Device for erasing writing from blackboards
US5537711A (en) * 1995-05-05 1996-07-23 Tseng; Yu-Che Electric board cleaner
WO2003002358A1 (en) * 2001-06-29 2003-01-09 Yulong Wang Eraser selectively openable and closable apertures
US20030037404A1 (en) * 2001-08-23 2003-02-27 Wu Tung Ming Electronic blackboard eraser

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1801620A (en) * 1928-06-11 1931-04-21 Sanford S Bettman Vacuum board eraser
FR1184699A (en) * 1957-09-13 1959-07-24 Device for erasing blackboards with absorption of chalk dust
GB910383A (en) * 1960-02-29 1962-11-14 Salo David Rand Improvements in or relating to vacuum cleaners
US4204298A (en) * 1977-11-18 1980-05-27 Hiroyuki Handa Compact vacuum cleaner
FR2573699A1 (en) * 1984-11-28 1986-05-30 Lobez Sagues Manuel Device for erasing writing from blackboards
US5537711A (en) * 1995-05-05 1996-07-23 Tseng; Yu-Che Electric board cleaner
WO2003002358A1 (en) * 2001-06-29 2003-01-09 Yulong Wang Eraser selectively openable and closable apertures
US20030037404A1 (en) * 2001-08-23 2003-02-27 Wu Tung Ming Electronic blackboard eraser

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