Specification of William Henry Gummer
Subtitle: stench trap
Publisher: Great Seal Patent Office
Published: 1866
Place of publication: London
Language: eng
Subjects: Sewerage; Vertical drains; Odor control
Notes: Cover title.

At head of title: A.D. 1865, 29th August. No. 2220.

William Henry Gummer, of Rotherham, in the county of York."