Complete patent specifications

Scope and Content

Complete patent specifications for:

1. Improvements in or relating to the treatment of dust-laden air. Applicants Thomas David Jones and William Alfred Terrell. Filed 31 Dec 1941.

2. Improvements in or relating to apparatus for heating air. Applicants Thomas David Jones and John Howard Griffiths. Filed 31 Dec 1941.

3. Improvements in or relating to the reduction of dust in coal mines. Applicants Thomas David Jones and William Alfred Terrell. Filed 31 Dec 1941.

Custodial History

Previous reference number: 1991/548/1/6