Wm. R. Stewart & Sons (Hacklemakers) Ltd.

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Dundee, GB

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Patents Grantslast 30 patents

Information Patent Grant
Fibre opening devices
- Patent number 4,884,395
- Issue date Dec 5, 1989
- Wm. R. Stewart & Sons (Hacklemakers) Ltd.
- John J. Stamp
- 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

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