Patent Agreements and Assignment of letters patent

Scope and Content

1. Patent agreement between Thomas David Jones, Y Fenni, Bettws-y-Coed Road, Cyncoed and John Howard Griffiths, 5 Forest Grove, Treforest and the Trustees of the Monmouthshire and South Wales Coal Owners' Association. The patent was for improvements in or relating to heating air. Dated 25 Mar 1941.

2. Patent agreement between Thomas David Jones, Y Fenni, Bettws-y-Coed Road, Cyncoed and William Alfred Terrell, Trepca House, 57 St Isan Road, Cardiff and the Trustees of the Monmouthshire and South Wales Coal Owners' Association. The patent was for improvements in or relating to the treatment of dust laden air and to the reduction of dust in coal mines. Dated 25 Mar 1941.

3. Deed of Assignment between the above parties, dated 3 Mar 1943.

Custodial History

Previous reference number: 1991/548/2/10