Specification of Hewley Charles Wordsworth
Subtitle: respirators
Publisher: Great Seal Patent Office
Published: 1876
Place of publication: London
Language: eng
Subjects: Respiratory Protective Devices
Notes: Cover title.

At head of title: A.D. 1875, 3rd July. No. 2411.

"Hewley Charles Wordsworth, of no.5a, Sloane Street, Knightsbridge, in the county of Middlesex".