Specification of Bevan George Sloper and Felix Jean Joseph Washer
Subtitle: treating sewage
Contributors: Washer, Felix Jean Joseph
Publisher: Great Seal Patent Office
Published: 1871
Place of publication: London
Language: eng
Subjects: Sewage; Sewage disposal plants; Deodorization; Manures
Notes: Cover title.

At head of title: A.D. 1871, 8th February. No. 329.

"Bevan George Sloper, of Northfleet, in the county of Kent, chemical engineer, and Felix Jean Joseph Washer of Brussels, in the kingdom of Belgium, industrial engineer ".