| Patents for A47B 41 - School desks or tables (4,656) |
|---|
| 10/03/1990 | CN2062974U Detachable lift school desk and chair |
| 10/03/1990 | CN2062973U Combined writing desk for children |
| 09/19/1990 | CN1045343A Chair helping to correct reading and writing posture and eyesight |
| 09/18/1990 | US4957262 Space definer for use on horizontal surfaces |
| 08/22/1990 | EP0382897A1 Writing or working table |
| 07/25/1990 | CN2059552U Multifunction rack for eyesight preserving |
| 07/18/1990 | CN2059318U Integrated table and chair with adjustable angle |
| 05/30/1990 | CN2057564U Sitting posture correcting unit for child studying |
| 05/02/1990 | CN2056577U Protector for primary school pupil short-sightedness |
| 03/28/1990 | CN2054997U School desk with posture rectifying device |
| 03/14/1990 | CN2054310U Eyesight-protecting unit |
| 03/14/1990 | CN2054277U Height-adjustable school desk for student |
| 03/01/1990 | DE3828788A1 Desk or worktable |
| 02/28/1990 | CN2053460U 读写姿势矫正器 Reading and writing posture braces |
| 12/13/1989 | CN2049092U Adjustable writing desk |
| 11/29/1989 | CN2048309U 可调式课桌 Adjustable desks |
| 08/30/1989 | CN2043463U Folding desk capable of adjusting desktop height and rotating desktop |
| 07/19/1989 | CN2041117U Height adjustable student desk |
| 04/19/1989 | CN2036038U Eyesight protector for pupil writing |
| 04/19/1989 | CN2035989U Multifunctional desk for children |
| 03/29/1989 | CN2034799U Foldable and height-variable domestic student desk |
| 03/01/1989 | CN2033213U Dual purpose desk |
| 02/01/1989 | CN2031632U Pupil health rack |
| 01/18/1989 | CN2030822U Multifunctional adjustable school desks and chairs |
| 01/04/1989 | CN2030042U Adjustable combined desk and chair |
| 01/04/1989 | CN2030041U Adjustable folding combined desk and chair |
| 12/14/1988 | CN87208085U Adjustable combination desk |
| 11/15/1988 | US4784382 Children's user-friendly podium |
| 08/24/1988 | CN88201333U Corrector for children reading and writing posture |
| 08/24/1988 | CN87213067U Multifunctional table and chair for study |
| 07/20/1988 | CN87203924U Adjustable school desks and chairs for children |
| 06/22/1988 | CN87200910U Table for studing speech sounds |
| 05/18/1988 | CN87209277U Height-adjustable combined desk and chair |
| 02/17/1988 | CN87209515U Distance keeper for pupil to prevent myopia |
| 12/02/1987 | CN87203903U Correcting device for sitting posture |
| 11/18/1987 | CN86208709U School desk with movable desktop |
| 11/04/1987 | CN87200090U Device for correcting the reading or writting optical range and attitude of school pupils |
| 10/31/1987 | CN86207971U Adjustable desk with stool for pupils |
| 10/29/1987 | DE3628992A1 Device for protecting against copying |
| 05/12/1987 | US4664039 Writing table with adjustable working surface and adjustable footrest |
| 04/02/1987 | DE3630628A1 Desk with height- and inclination-adjustable desk top |
| 10/22/1986 | CN85204886U Posture-correcting unit |
| 07/09/1986 | CN85203898U Eyesight protection stands for children |
| 03/20/1984 | US4437411 Multi-position student table |
| 02/14/1984 | US4431239 Pivot means |
| 05/10/1983 | US4382643 Desk storage device |
| 03/29/1983 | US4377976 Art aid devices |
| 07/07/1981 | CA1104625A1 Child's convertible desk |
| 03/27/1979 | CA1051214A1 Key for a cylinder lock and method of manufacture |
| 08/08/1978 | US4105271 Desks |
| 06/13/1978 | US4094255 Artist's palette, paint and accessory stand |
| 09/13/1977 | US4047774 Student work table |
| 09/13/1977 | US4047309 Information demonstration device |
| 08/09/1977 | US4040692 Convertible multipurpose table |
| 09/21/1976 | US3981086 Carrel apparatus for use in learning |
| 01/13/1976 | US3931771 Extendable educational module |