Specification of John Henry Johnson
Subtitle: dental wash
Publisher: Great Seal Patent Office
Published: 1869
Place of publication: London
Language: eng
Subjects: Oral Hygiene; Mouthwashes
Notes: Cover title.

At head of title: A.D. 1869, 13th April. No. 1138.

John Henry Johnson, of 47, Lincoln's Inn Fields, in the county of Middlesex, gentleman".