Office chairs

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Patents Grantslast 30 patents

Information Patent Grant
Caster with braking device
- Patent number 11,052,704
- Issue date Jul 6, 2021
- GROSS + FROELICH GMBH & CO.
- Hans-Wilhelm Rottenau
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Pressured braking wheel
- Patent number 10,099,511
- Issue date Oct 16, 2018
- Hung Trien Ma
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Castor apparatus for a chair base and a chair base with a castor ap...
- Patent number 9,155,392
- Issue date Oct 13, 2015
- Royal Technologies Corporation
- James Henry Baas
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Walker and wheel assembly therefor
- Patent number 6,609,719
- Issue date Aug 26, 2003
- Troy A. Heien
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Obstacle traversing wheel assembly
- Patent number 6,357,765
- Issue date Mar 19, 2002
- Troy A. Heien
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Brake mechanism of castor
- Patent number 5,617,934
- Issue date Apr 8, 1997
- Sung-Wang Yang
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Pivoting castor
- Patent number 5,355,550
- Issue date Oct 18, 1994
- Su-Hua Yang
- B60 - VEHICLES IN GENERAL
Information Patent Grant
691532
- Patent number 691,532
- Issue date Jan 21, 1902
- B60 - VEHICLES IN GENERAL