William R. Stewart

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Strathmartine, GB

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Patents Grantslast 30 patents

Information Patent Grant
Opening roller for open end spinning machines
- Patent number 5,005,259
- Issue date Apr 9, 1991
- William R. Stewart & Sons Ltd.
- William R. Stewart
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Fiber opening devices
- Patent number 4,869,060
- Issue date Sep 26, 1989
- Wm. R. Stewart & Sons (Hacklemakers) Limited
- William R. Stewart
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Opening roller assemblies for open end spinning machines
- Patent number 4,679,390
- Issue date Jul 14, 1987
- Wm. R. Stewart & Sons (Hacklemakers) Limited
- William R. Stewart
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Opening roller for open end spinning machines
- Patent number 4,530,133
- Issue date Jul 23, 1985
- Wm. R. Stewart & Sons (Hacklemakers) Ltd.
- William R. Stewart
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Lag or stave assembly for Kirschner beaters
- Patent number 4,270,245
- Issue date Jun 2, 1981
- Wm. R. Stewart & Sons (Hacklemakers) Ltd.
- David B. Stewart
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Opening roller for an open-end spinning machine
- Patent number 4,135,355
- Issue date Jan 23, 1979
- Wm. R. Stewart & Sons (Hacklemakers) Ltd.
- William R. Stewart
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING