Specification of Edwin Busby
Subtitle: respirators
Publisher: Great Seal Patent Office
Published: 1873
Place of publication: London
Language: eng
Subjects: Masks; Respiratory Protective Devices
Notes: Cover title.

At head of title: A.D. 1872, 28th August. No. 2557.

"Edwin Busby, of Birmingham, in the county of Warwick, wire weaver and respirator manufacturer".